AU2014400928B2

AU2014400928B2 - Composition for forming electric arc furnace dust briquette, and electric arc furnace dust briquette

Info

Publication number: AU2014400928B2
Application number: AU2014400928A
Authority: AU
Inventors: Nak Woon Choi; Tae Heon Kim; Tae Hong Kim
Original assignee: Lotte Fine Chemical Co Ltd
Current assignee: Lotte Fine Chemical Co Ltd
Priority date: 2014-07-17
Filing date: 2014-12-29
Publication date: 2018-12-13
Anticipated expiration: 2034-12-29
Also published as: WO2016010212A1; CN106661475A; KR102280254B1; BR112017000857A2; CN106661475B; AU2014400928A1; KR20160009882A

Abstract

Disclosed are a composition for forming an electric arc furnace dust briquette, and an electric arc furnace dust briquette. The disclosed composition for forming an electric arc furnace dust briquette comprises electric arc furnace dust and, as a binder, a cellulose ether compound with viscosity of 4,000-80,000 cps.

Description

COMPOSITION FOR FORMING ELECTRIC ARC FURNACE DUST BRIQUETTE AND ELECTRIC ARC FURNACE DUST BRIQUETTE

TECHNICAL FIELD [0001] The present disclosure relates to a composition for forming an electric arc furnace dust briquette and an electric arc furnace dust briquette, and more particularly, to a composition for forming an electric arc furnace dust briquette, containing a cellulose ether compound having a certain viscosity range as a binder, and an electric arc furnace dust briquette.

BACKGROUND ART [0002] Iron manufacturing processes are classified into an iron making process of preparing molten iron by charging iron ore and/or scrap iron into a blast furnace together with coal, a steel making process of preparing molten steel of a high purity by removing impurities from the molten iron, a casting process of making a halffinished product such as solid slab from the non-solid molten steel, and a rolling process of making a final steel product by processing the half-finished product such as slab.

[0003] In an integrated iron and steel making process, molten iron is produced by using 90wt% to 100wt% of iron ore and 0 to 10wt% of reduced iron (scrap) or scrap iron as raw materials. In an electric arc furnace steel making process, molten iron is produced by using 90wt% to 95wt% of scrap iron and 5wt% to 10wt% of iron ore as raw materials.

[0004] In the electric arc furnace steel making process, 1,2wt% to 1,5wt% of dust, i.e., electric arc furnace steel dust (EAFD), with respect to 100wt% of the final molten steel, is generated during melting of scrap iron and iron ore. This electric arc furnace steel dust includes 25~35wt% of iron component at the highest content, and 18~28wt% of zinc and 2~5wt% of lead known as main reusable materials.

[0005] There are various methods of recycling valuable metals contained in steel dust, including the Waelz method using a kiln furnace and the ZIA (Zinc Iron Availability) method. Recently, methods of recovering valuable metals by reduction in

10822301_1 (GHMatters) P104985.AU

2014400928 08 Nov 2018 a calcination furnace from electric arc furnace steel dusts after briquetting of the electric arc furnace steel dusts have been developed and commercially available. [0006] Electric arc furnace steel dusts are micro-particulates having an average particle diameter of about 1 //m, and a relative large amount of a binder is required for briquetting of the micro-particulates. Furthermore, to form briquettes having high compressive strength, the briquetting process involves a drying process at a temperature of about 140°C to about 150°C and uses molasse as a main binder. [0007] However, when molasse is used as a binder, the following disadvantages may occur.

[0008] Firstly, with the recently growing of bioethanol industry, molasse may be confronted with a short supply and consequential a price rise.

[0009] Secondly, molasse also gives off bad odors during processes.

[0010] Due to the heat applied during a drying process in the process of manufacturing electric arc furnace dust briquettes, latent heat may be accumulated in the electric arc furnace dust briquettes. This may primarily lead to combustion of molasse and then secondarily that of coal serving as a reducing agent, increasing risks of fire hazards.

[0011] Additionally, molasse in a sticky liquid form may have an increasing viscosity with lowering temperature, and may stick to a storage tank, pipes and nozzles when stored, conveyed, and sprayed. To prevent these drawbacks, preventive equipments (for example, a high-pressure pump and a heating system) are required. Thus, when molasse is used as the binder, the process of making electric arc furnace dust briquettes may become complicated.

[0012] The viscosity of molasse may vary depending on its source, supplier, and supply point of time because the malasse originates from natural substance, and it may also be difficult to control the quality of electric arc furnace dust briquettes constant.

[0013] Molasse is in liquid form and has low density, and a large amount of molasse is required, together with large capacity storage equipments therefor. A large transportation quantity of molasse may also lead to a rise in transportation cost.

10822301_1 (GHMatters) P104985.AU

2014400928 08 Nov 2018

DETAILED DESCRIPTION OF THE INVENTION

TECHNICAL PROBLEM [0014] The present invention provides a composition for forming an electric arc furnace dust briquette, the composition including a cellulose ether compound having a certain viscosity range as a binder.

[0015] The present invention provides an electric arc furnace dust briquette formed from the composition for forming an electric arc furnace dust briquette.

TECHNICAL SOLUTION [0016] According to an aspect of the present invention, a composition for forming an electric arc furnace dust briquette includes: an electric arc furnace dust; and a cellulose ether compound having a viscosity of about 4,000 to about 80,000 cps as a binder wherein the cellulose ether compound does not include carboxymethylcellulose (CMC).

[0017] The electric arc furnace dust may have an average particle diameter of about 0.3//m to about 1.0/zm.

[0018] THIS PARAGRAPH HAS INTENTIONALLY BEEN LEFT BLANK.

[0019] The cellulose ether compound may include at least one compound selected from the group consisting of methyl cellulose (MC), hydroxyethyl cellulose (HEC), hydroxypropyl cellulose (HPC), hydroxypropyl methyl cellulose (HPMC), hydroxyethyl methyl cellulose (HEMC), and methyl ethyl hydroxyethyl cellulose (MEHEC).

[0020] The methyl cellulose (MC) may have a degree of substitution of methyl group of about 18wt% to about 32wt%, the hydroxyethyl cellulose (HEC) may have a degree of substitution of hydroxyethyl group of about 20wt% to about 80wt%, the hydroxypropyl cellulose (HPC) may have a degree of substitution of hydroxypropyl group of about 20wt% to about 80wt%, the hydroxypropyl methyl cellulose (HPMC) may have a degree of substitution of methyl group of about 18wt% to about 32wt% and a degree of substitution of hydroxypropyl group of about 2wt% to about 14wt%, and the hydroxyethyl methyl cellulose (HEMC) may have a degree of substitution of methyl group of about 18wt% to about 32wt% and a degree of substitution of

10822301_1 (GHMatters) P104985.AU

2014400928 08 Nov 2018 hydroxyethyl group of about 2wt% to about 14wt%.

[0021] An amount of the cellulose ether compound may be from about 0.01 parts to about 15.0 parts by weight with respect to 100 parts by weight of the electric arc furnace dust.

[0022] The composition for forming an electric arc furnace dust briquette may further include an additional binder in an amount of greater than 0 to about 15.0 parts or less by weight with respect to 100 parts by weight of the electric arc furnace dust.

[0023] The additional binder may include at least one compound selected from the group consisting of molasse, epoxy resin, glycerol, guar gum, acacia gum, lignosulfonate, nitrophenol, organosilicon, polyacrylamide, polyvinyl acetal, polyvinyl alcohol, starch, pregelatinized starch, starch ether, and liquor.

[0024] The composition for forming an electric arc furnace dust briquette may further include water in an amount of greater than 0 to about 10.0 parts or less by weight with respect to 100 parts by weight of the electric arc furnace dust.

[0025] The composition for forming an electric arc furnace dust briquette may not include glycerin.

[0026] According to an aspect of the present invention, there is provided an electric arc furnace dust briquette manufactured from the composition for forming an electric arc furnace dust briquette according to any of the above-described embodiments.

[0027] The electric arc furnace dust briquette may include a cellulose ether compound and may not include glycerin.

ADVANTAGEOUS EFFECTS OF THE INVENTION [0028] According to one or more embodiments, a composition for forming an electric arc furnace dust briquette may include a cellulose ether compound in colorless and odorless solid powder form and having a certain viscosity range as a binder, and thus may improve working environments free of odor. A total amount of the binder used may be reduced (to about one-tenth of the amount of molasse to be used when only molasse is used alone (100%)). Accordingly, fire risks may be improved, and the process of manufacturing an electric arc furnace dust briquette may be simplified. A high-strength electric arc furnace dust briquette may be manufactured while maintaining conditions of more stable supply-demand and more stable price compared to molasse.

10822301_1 (GHMatters) P104985.AU

2014400928 08 Nov 2018

10822301_1 (GHMatters) P104985.AU

2014400928 08 Nov 2018

MODE OF THE INVENTION [0029] Hereinafter, embodiments of a composition for forming an electric arc furnace dust briquette will be described in detail.

[0030] According to an aspect of the present disclosure, a composition for forming an electric arc furnace dust briquette includes: an electric arc furnace dust (EAFD); and a cellulose ether compound having a viscosity of about 4,000 to about 80,000 centipoises (cps) or mPa-s as a binder. As used herein, the term ^relectric arc furnace dust j may refer to a dust produced during a steel making process in electric arc furnace steel manufacturing processes. As used herein, the term ^rviscosity of the cellulose ether compoundj may refer to a viscosity of a 2wt% aqueous cellulose ether compound solution measured at about 20±0.1°C with a Brookfield DV-ll+Pro (spindle HA).

[0031] When the cellulose ether compound has a viscosity of less than 4,000 cps, the viscosity of the solution (for example, aqueous solution) containing the cellulose ether compound may be so low that the binding strength of the cellulose ether compound to the electric arc furnace dust may be reduced. When the cellulose ether compound has a viscosity greater than 80,000 cps, the molecular weight of the cellulose ether compound may be so high that the solubility in water of the cellulose ether compound may be decreased, and the binding strength to the electric arc furnace dust may not be high enough.

[0032] The cellulose ether compound may have a viscosity of, for example, about 5,000 cps ~ about 70,000 cps, and in some embodiments, about 6,000 cps ~ about 60,000 cps, and in some embodiments, about 7,000 cps ~ about 50,000 cps, and in some other embodiments, about 8,000 cps ~ about 40,000 cps, and in still other embodiments, about 9,000 cps ~ about 30,000 cps, and yet still other embodiments, about 10,000 cps ~ about 20,000 cps.

[0033] The electric arc furnace dust may have an average particle diameter of about 0.3 cps ~ about 1.0//m.

[0034] The cellulose ether compound may bind the particles of the electric arc furnace dust to each other.

[0035] The cellulose ether compound may have good solubility in water and thus

10822301_1 (GHMatters) P104985.AU

2014400928 08 Nov 2018 may not be precipitated on an inner surface of nozzles when sprayed in the aqueous solution state through the nozzles and thus may not block nozzles. The cellulose ether compound may be stored and transported in solid powder form alone or as a mixture with the electric arc furnace dust, and may then be mixed with water at a final stage of use. Accordingly, it may be possible to use smaller and simplified storage equipments and simplified transportation equipments. The cellulose ether compound may provide the same binding effect as molasse even with the use of a smaller amount than the molasse, may have less fire risks, and may have a lower cost value than the molasse, and thus may reduce the material cost. The cellulose ether compound may be more stable in terms of supply and demand and price than molasse.

[0036] The cellulose ether compound may not include carboxymethylcellulose (CMC). When the cellulose ether compound includes carboxymethylcellulose (CMC), an electric arc furnace dust briquette manufactured from the composition for forming an electric arc furnace dust briquette may have a reduced strength.

[0037] The cellulose ether compound may include at least one compound selected from the group consisting of methyl cellulose (MC), hydroxyethyl cellulose (HEC), hydroxypropyl cellulose (HPC), hydroxypropyl methyl cellulose (HPMC), hydroxyethyl methyl cellulose (HEMC), and methyl ethyl hydroxyethyl cellulose (MEHEC).

[0038] The methyl cellulose (MC) may have a degree of substitution of methyl group of about 18wt% ~ about 32wt%, the hydroxyethyl cellulose (HEC) may have a degree of substitution of hydroxyethyl group of about 20wt% ~ about 80wt%, the hydroxypropyl cellulose (HPC) may have a degree of substitution of hydroxypropyl group of about 20wt% ~ about 80wt%, the hydroxypropyl methyl cellulose (HPMC) may have a degree of substitution of methyl group of about 18wt% ~ about 32wt% and a degree of substitution of hydroxypropyl group of about 2wt% ~ about 14wt%, and the hydroxyethyl methyl cellulose (HEMC) may have a degree of substitution of methyl group of about 18wt% ~ about 32wt% and a degree of substitution of hydroxyethyl group of about 2wt% ~ about 14wt%.

[0039] The amount of the cellulose ether compound may be from about 0.01 parts to about 15.0 parts by weight with respect to 100 parts by weight of the electric arc furnace dust. When the amount of the cellulose ether compound is within this range, a high-strength electric arc furnace dust briquette may be obtained with the use of a

10822301_1 (GHMatters) P104985.AU

2014400928 08 Nov 2018 smaller amount than molasse.

[0040] The composition for forming an electric arc furnace dust briquette may further include an additional binder in an amount of greater than 0 to about 15.0 parts or less by weight with respect to 100 parts by weight of the electric arc furnace dust. When the amount of the additional binder is within this range, the amount of the cellulose ether compound used may be reduced so that the preparation cost of the composition for forming an electric arc furnace dust briquette may also be reduced. Furthermore, the composition for forming an electric arc furnace dust briquette may have an increased drying rate.

[0041] The additional binder may include at least one compound selected from the group consisting of molasse, epoxy resin, glycerol, guar gum, acacia gum, lignosulfonate, nitrophenol, organosilicon, polyacrylamide, polyvinyl acetal, polyvinyl alcohol, starch, pregelatinized starch, starch ether, and liquor.

[0042] The composition for forming an electric arc furnace dust briquette may further include water in an amount of greater than 0 to about 10.0 parts or less by weight with respect to 100 parts by weight of the electric arc furnace dust. When the amount of water is within this range, a composition that is easy to handle and has a uniform composition may be obtained, and sticking of some components in the composition to a surface of a molding machine in a briquette forming process may be prevented.

[0043] The composition for forming an electric arc furnace dust briquette may not include glycerin. When the composition for forming an electric arc furnace dust briquette includes glycerin, the drying rate of an electric arc furnace dust briquette prepared from the composition may become slow, resulting in reduced heat efficiency.

[0044] According to another aspect of the present disclosure, there is provided an electric arc furnace dust briquette formed from the composition for forming an electric arc furnace dust briquette according to any of the above-described embodiments.

[0045] A method of manufacturing an electric arc furnace dust briquette from the composition for forming an electric arc furnace dust briquette according to any of the above-described embodiments is as follows. The method may include putting the composition for forming an electric arc furnace dust briquette into a mold, pressing the mold at a predetermined pressure, and drying the resulting pressed product thereby to form an electric arc furnace dust briquette.

10822301_1 (GHMatters) P104985.AU

2014400928 08 Nov 2018 [0046] The electric arc furnace dust briquette may include a cellulose ether compound and may not include glycerin.

[0047] One or more embodiments of the present disclosure will now be described in detail with reference to the following examples. However, these examples are only for illustrative purposes and are not intended to limit the scope of the one or more embodiments of the present disclosure.

[0048] [Examples] [0049] Examples 1 to 9 and Comparative Examples 1 and 2 [0050] (Preparation of composition for forming an electric arc furnace dust briquette) [0051] Electric arc furnace dust (Average particle diameter: about 0.3//m) obtained from a company having an electric process of steel manufacture in Korea, hydroxypropyl methyl cellulose, and optionally molasse (KCIE CO., LTD., Solid content: 77.2wt%, Total sugar content: 49.3wt%) were mixed together to obtain a first composition. Then, distilled water was added to the first composition thereby to obtain a composition for forming an electric arc furnace dust briquette. The amounts of the components in each of the compositions of Examples 1 to 9 and Comparative Examples 1 and 2 are represented in Table 1.

[0052] (Manufacture of electric arc furnace dust briquette) [0053] Fifty electric arc furnace dust briquettes were manufactured by compression molding each of the prepared compositions for forming an electric arc furnace dust briquette at a load of about 205 bar with a Briquette machine (available from JEIL MACHINERY CO., LTD., JCB250T), and thirty of them were selected excluding twenty of them including the first ten and the last ten. The selected electric arc furnace dust briquettes were dried in an oven at about 145°C for about 3 hours. The weight of each electric arc furnace dust briquette was about 10-20 g.

[0054] Comparative Example 3 [0055] (Preparation of composition for forming an electric arc furnace dust briquette) [0056] A composition for forming an electric arc furnace dust briquette was prepared in the same manner as in Example 1, except that carboxymethylcellulose (CMC) (available from Ashiland, Aquaion™, Viscosity: 6,000cps) was used instead of hydroxypropyl methyl cellulose (HPMC1). The amounts of the components in the composition of Comparative Example 3 are represented in Table 1.

10822301_1 (GHMatters) P104985.AU

2014400928 08 Nov 2018 [0057] Comparative Example 4 [0058] (Preparation of composition for forming an electric arc furnace dust briquette) [0059] Electric arc furnace dust (Average particle diameter: about 0.3//m) obtained from a company having an electric process of steel manufacture in Korea and molasse (KCIE CO., LTD., Solid content: 77.2wt%, Total sugar content: 49.3wt%) were mixed together to obtain a first composition. Then, distilled water was added to the first composition thereby to obtain a composition for forming an electric arc furnace dust briquette. The amounts of the components in the composition of Comparative Example 4 are represented in Table 1.

[0060] (Manufacture of electric arc furnace dust briquette) [0061] Electric arc furnace dust briquettes were manufactured in the same manner as in Examples 1 to 9 and Comparative Examples 1 and 2, except that the composition for forming a electric arc furnace dust briquette of Comparative Example 4 was used instead of the compositions for forming a electric arc furnace dust briquette prepared in Examples 1 to 9 and Comparative Examples 1 and 2. The weight of each electric arc furnace dust briquette was about 10-20 g.

[Table 1]

	Mixing ratio (Parts by weight)
Electric arc furnace dust	Molasse	Distilled water	HPMC	CMC
1	2	3	4	5
Example 1	100	0	6.5	0.5	0	0	0	0	0
Example 2	100	0	7.0	0.8	0	0	0	0	0
Example 3	100	0	7.5	1.0	0	0	0	0	0
Example 4	100	0	8.0	1.5	0	0	0	0	0
Example 5	100	0.5	6.0	0.8	0	0	0	0	0
Example 6	100	1.0	5.5	0.8	0	0	0	0	0
Example 7	100	1.5	5.0	0.8	0	0	0	0	0
Example 8	100	0	6.5	0	0.5	0	0	0	0
Example 9	100	0	6.5	0	0	0.5	0	0	0
Comparative Example 1	100	0	6.5	0	0	0	0.5	0	0
Comparative Example 2	100	0	6.5	0	0	0	0	0.5	0
Comparative	100	0	6.5	0	0	0	0	0	0.5

10822301_1 (GHMatters) P104985.AU

2014400928 08 Nov 2018

Example 3
Comparative Example 4	100	12	2.5	0	0	0	0	0	0

HPMC1: Samsung Fine Chemicals Co., Ltd., MECELLOSE®HPMC (PMC-60U), Viscosity:

60,000 cps, Degree of substitution of methyl group: 23.2wt%, Degree of substitution of hydroxypropyl group: 8.8wt%

HPMC2: Samsung Fine Chemicals Co., Ltd., MECELLOSE®HPMC (PMB-40H), Viscosity: 4,000cps, Degree of substitution of methyl group: 28.6wt%, Degree of substitution of hydroxypropyl group: 6.1wt%

HPMC3: Samsung Fine Chemicals Co., Ltd., HPMC, Viscosity: 80,000cps, Degree of substitution of methyl group: 22.8wt%, Degree of substitution of hydroxypropyl group: 9.1wt%

HPMC4: Samsung Fine Chemicals Co., Ltd., HPMC, Viscosity: 3,000cps, Degree of substitution of methyl group: 26.4wt%, Degree of substitution of hydroxypropyl group: 8.2wt%

HPMC5: Samsung Fine Chemicals Co., Ltd., HPMC, Viscosity: 85,000cps, Degree of substitution of methyl group: 22.6wt%, Degree of substitution of hydroxypropyl group: 9.2wt% [0062] Evaluation Example [0063] Evaluation Example 1 [0064] Drop impact strengths and compressive strengths of the electric arc furnace dust briquettes manufactured in Examples 1 to 9 and Comparative Examples 1 to 4 were evaluated by the following methods. The results are shown in Table 2.

[0065] (Drop impact strength evaluation) [0066] After twenty electric arc furnace dust briquettes manufactured in each of the examples were dropped ten times at a 165-cm height, a total weight of the remaining fragments of the electric arc furnace dust briquettes having a size of 5//m or greater was represented as a percentage by weight with respect to a total weight of the electric arc furnace dust briquettes of each example before the dropping. This obtained percentage value by weight was evaluated as a drop impact strength. A larger percentage value by weight obtained means that the electric arc furnace dust briquette had a higher drop impact strength. This drop impact strength is a criterion for estimation of a percentage of loss by several times of dropping while each electric arc furnace dust briquette is transported by a conveyor belt.

[0067] (Compressive strength evaluation) [0068] The maximum strengths of the electric arc furnace dust briquettes when compressed at a rate of 5 /zm/min with a universal material tester (SHINGANG PRECISION CO., LTD., AD-universal material tester-kN) were measured and

10822301_1 (GHMatters) P104985.AU

2014400928 08 Nov 2018 recorded as a compressive strength. This compressive strength is a criterion for estimation of a damage ratio by their own weight when the electric arc furnace dust briquettes are stored in a storage tank.

[Table 2]

	Example	Comparative Example
1	2	3	4	5	6	7	8	9	1	2	3	4
Drop impact strength (%)	85.4	86.1	87.8	91.2	86.2	87.2	87.4	85.7	86.0	75.5	74.9	72.1	83.2
Compressive strength (MPa)	27.0	27.3	27.9	29.1	27.1	27.6	28.5	27.1	27.0	21.2	22.9	20.0	25.3

[0069] Referring to Table 2, the electric arc furnace dust briquettes manufactured in Examples 1 to 9 were found to have higher drop impact strength and higher compressive strength, as compared with the electric arc furnace dust briquettes manufactured according to Comparative Examples 1 to 4.

[0070] It should be understood that embodiments described herein should be considered in a descriptive sense only and not for purposes of limitation. Descriptions of features or aspects within each embodiment should typically be considered as available for other similar features or aspects in other embodiments. While one or more embodiments have been described with reference to the figures, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope as defined by the following claims.

[0071] In the claims which follow and in the preceding description of the invention, except where the context requires otherwise due to express language or necessary implication, the word “comprise” or variations such as “comprises” or “comprising” is used in an inclusive sense, i.e. to specify the presence of the stated features but not to preclude the presence or addition of further features in various embodiments of the invention.

[0072] It is to be understood that, if any prior art publication is referred to herein, such reference does not constitute an admission that the publication forms a part of the common general knowledge in the art, in Australia or any other country.

Claims

1. A composition for forming an electric arc furnace dust briquette, comprising:

an electric arc furnace dust; and a cellulose ether compound having a viscosity of about 4,000 to about 80,000 cps as a binder, wherein the cellulose ether compound does not include carboxymethylcellulose (CMC).

2. The composition of claim 1, wherein the electric arc furnace dust has an average particle diameter of about 0.3 wt% to about 1,0//m.

3. The composition of claim 1, wherein the cellulose ether compound comprises at least one compound selected from the group consisting of methyl cellulose (MC), hydroxyethyl cellulose (HEC), hydroxypropyl cellulose (HPC), hydroxypropyl methyl cellulose (HPMC), hydroxyethyl methyl cellulose (HEMC), and methyl ethyl hydroxyethyl cellulose (MEHEC).

4. The composition of claim 3, wherein the methyl cellulose (MC) has a degree of substitution of methyl group of about 18wt% to about 32wt%, the hydroxyethyl cellulose (HEC) has a degree of substitution of hydroxyethyl group of about 20wt% to about 80wt%, the hydroxypropyl cellulose (HPC) has a degree of

25 substitution of hydroxypropyl group of about 20wt% to about 80wt%, the hydroxypropyl methyl cellulose (HPMC) has a degree of substitution of methyl group of about 18wt% to about 32wt% and a degree of substitution of hydroxypropyl group of about 2wt% to about 14wt%, and the hydroxyethyl methyl cellulose (HEMC) has a degree of substitution of methyl group of about 18wt% to about 32wt% and a degree 30 of substitution of hydroxyethyl group of about 2wt% to about 14wt%.

5. The composition of claim 1, wherein an amount of the cellulose ether compound is from about 0.01 parts to about 15.0 parts by weight with respect to 100

10822301_1 (GHMatters) P104985.AU

2014400928 08 Nov 2018 parts by weight of the electric arc furnace dust.

6. The composition of claim 1, further comprising an additional binder in an amount of greater than 0 to about 15.0 parts or less by weight with respect to 100 parts by weight of the electric arc furnace dust.

7. The composition of claim 6, wherein the additional binder comprises at least one compound selected from the group consisting of molasse, epoxy resin, glycerol, guar gum, acacia gum, lignosulfonate, nitrophenol, organosilicon, polyacrylamide, polyvinyl acetal, polyvinyl alcohol, starch, pregelatinized starch, starch ether, and liquor.

8. The composition of claim 1, further comprising water in an amount of greater than 0 to about 10.0 parts or less by weight with respect to 100 parts by weight of the electric arc furnace dust.

9. The composition of claim 1, wherein the composition does not comprise glycerin.

10. An electric arc furnace dust briquette manufactured from the composition for forming an electric arc furnace dust briquette according to any one of claims 1 to 9.

11. The electric arc furnace dust briquette of claim 10, wherein the electric

25 arc furnace dust briquette comprises a cellulose ether compound and does not comprise glycerin.