JPH0212661B2 - - Google Patents
Info
- Publication number
- JPH0212661B2 JPH0212661B2 JP13800382A JP13800382A JPH0212661B2 JP H0212661 B2 JPH0212661 B2 JP H0212661B2 JP 13800382 A JP13800382 A JP 13800382A JP 13800382 A JP13800382 A JP 13800382A JP H0212661 B2 JPH0212661 B2 JP H0212661B2
- Authority
- JP
- Japan
- Prior art keywords
- base material
- additive
- raw materials
- water
- coke
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000000463 material Substances 0.000 claims description 26
- 239000000654 additive Substances 0.000 claims description 20
- 239000002994 raw material Substances 0.000 claims description 20
- 230000000996 additive effect Effects 0.000 claims description 13
- 239000000571 coke Substances 0.000 claims description 11
- 238000002844 melting Methods 0.000 claims description 9
- 230000008018 melting Effects 0.000 claims description 9
- 238000005266 casting Methods 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 150000004649 carbonic acid derivatives Chemical class 0.000 claims description 4
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims description 3
- 150000001342 alkaline earth metals Chemical class 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 229910001512 metal fluoride Inorganic materials 0.000 claims description 3
- 229910044991 metal oxide Inorganic materials 0.000 claims description 3
- 150000004706 metal oxides Chemical class 0.000 claims description 3
- 239000002585 base Substances 0.000 description 16
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 9
- 239000000203 mixture Substances 0.000 description 6
- 239000012768 molten material Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- -1 shirasu Substances 0.000 description 4
- 239000000377 silicon dioxide Substances 0.000 description 4
- 239000011734 sodium Substances 0.000 description 4
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 description 4
- 229910052783 alkali metal Inorganic materials 0.000 description 3
- 150000001340 alkali metals Chemical class 0.000 description 3
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 3
- 238000009749 continuous casting Methods 0.000 description 3
- 150000004673 fluoride salts Chemical class 0.000 description 3
- 239000010436 fluorite Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 2
- 229910004261 CaF 2 Inorganic materials 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 2
- 239000000920 calcium hydroxide Substances 0.000 description 2
- 235000011116 calcium hydroxide Nutrition 0.000 description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 235000013024 sodium fluoride Nutrition 0.000 description 2
- 239000011775 sodium fluoride Substances 0.000 description 2
- 239000010456 wollastonite Substances 0.000 description 2
- 229910052882 wollastonite Inorganic materials 0.000 description 2
- 229910016569 AlF 3 Inorganic materials 0.000 description 1
- 229910052582 BN Inorganic materials 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 229910000655 Killed steel Inorganic materials 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- RQMIWLMVTCKXAQ-UHFFFAOYSA-N [AlH3].[C] Chemical compound [AlH3].[C] RQMIWLMVTCKXAQ-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910021538 borax Inorganic materials 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- JHLNERQLKQQLRZ-UHFFFAOYSA-N calcium silicate Chemical compound [Ca+2].[Ca+2].[O-][Si]([O-])([O-])[O-] JHLNERQLKQQLRZ-UHFFFAOYSA-N 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- 235000012241 calcium silicate Nutrition 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 229910001610 cryolite Inorganic materials 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 description 1
- 229910052808 lithium carbonate Inorganic materials 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 229910052863 mullite Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 239000004328 sodium tetraborate Substances 0.000 description 1
- 235000010339 sodium tetraborate Nutrition 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B1/00—Shaft or like vertical or substantially vertical furnaces
- F27B1/08—Shaft or like vertical or substantially vertical furnaces heated otherwise than by solid fuel mixed with charge
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Description
本発明は鋼の造塊及び連続鋳造などに使用する
鋳造用添加剤の基材の新しい製造方法に関するも
のである。
従来、鋳造用添加剤の主原料（以下、単に原料
という）として金属酸化物、金属弗化物及びアル
カリ土類金属の炭酸塩が使用されており、例え
ば、特公昭47−48763、特公昭47−48765、特開昭
51−94424、特開昭53−65212等において、CaO、
Al2O3、SiO2、MgO、Na2O、B2O3等の金属酸化
物、CaF2、AlF3、NaF、Na3AlF6等の金属弗化
物、CaCO3のアルカリ土類金属の炭酸塩が示さ
れており、その原料として、CaO源としてポルト
ランドセメント、石灰、高炉滓、ダイカルシウム
シリケート等、SiO2源として硅砂、フライアツ
シユ、シラス、ウオラストナイト等、Al2O3源と
してシヤモツト、ムライト等、B2O3源として硼
砂等、Na2O源としてソーダ灰等、MgO源として
ドロマイト等、CaF2源として蛍石、Na3AlF6源
として氷晶石、CaCO3源として石灰石が示され
ている。
これらのものは熱処理されていないものと熱処
理されたものを使用する場合があるが、熱処理に
より焼成又は溶融させたものは熱処理しないもの
を原料とした添加剤よりも滓化性及び水分に起因
するトラブル抑制の点で優れている。熱処理によ
る原料としては高炉滓やガラス粉末、又、天然の
ものとして玄武岩、ウオラストナイト、シラス等
がある。
しかし、これらのものは成分のバラツキが大き
いので、得られる添加剤の成分にバラツキが大き
い。しかもこれらのものを原料としたのでは原料
に組成の限定があるので、得られる添加剤の品種
が一定組成の品種に限定される等の欠点がある。
一方、生の原料を炉で溶解しようとする試みは
なされているが、未だ成分のバラツキの少い溶融
物を経済的に得る方法は実現していない。溶解炉
として電気炉を使用した場合特に電力費の点で問
題があり、たとえば100KWH／Tonあるいはそ
れ以上溶解に大量の電力を使用する点で問題があ
る。又、電気炉で溶解するのでは高温であるがた
めに、弗化物やアルカリ金属の歩留りが悪い等の
問題がある。
本発明はこれらの問題点を解決する事を目的に
成されたもので、鋼の鋳造用添加剤の原料をコー
クス比16〜28％、送風量90〜110Nm3／min・m2
で、水冷式キユポラで溶解し、冷却粉砕し鋼の鋳
造用添加剤の基材を製造する方法を提供するもの
である。
以下、本発明に関し詳細に説明する。
溶解炉をキユポラにしている理由は、燃料費の
点で他の炉に比較して最も安価で、しかも原料の
弗化物やアルカリ金属の歩留りを良くして溶解出
来る為である。又、キユポラを水冷式にしている
理由は、炉壁材を作用しない為に、炉壁材の消耗
による溶融物の成分の変動及び長時間操業が出来
ない等の欠点が回避出来る為である。
装入原料とコークスとのコークス比を16〜28％
とし、更に送風量を90〜110Nm3／min・m2とし
ている理由は、これらの範囲外になるとキユポラ
の操業が出来難くなる傾向があり、更に、原料の
溶融の成分のバラツキが大きくなり、また弗化物
やアルカリ金属の歩留りが悪くなる傾向がある為
である。キユポラに原料とコークスを上記比率で
装入しかつ上記送風量で溶解を行い、この溶解物
を水砕で粉砕し添加剤の基材と成す。
この様にして、得られた基材に使用目的に応じ
てカーボン、窒化硼素、炭酸リチウム、フツ化ナ
トリウム等の溶融速度調整剤やフラツクス又は少
量の成分調整材の１種又は数種を加えて、製品の
添加剤とする場合と、そのままの成分で他は何も
加えないで製品とする場合がある。
以下に、本発明の実施例を説明する。
実施例 １
第１図に示す径650mmの水冷式キユポラ１にベ
ツドコークス２を装入し、次に硅石34.5wt％、消
石灰40.0wt％、炭酸ソーダ14.0wt％、蛍石11.5wt
％を原料３として原料80重量部に対しコークス18
重量部の比率で装入し、ベツドコークス２に着火
後、羽口５から送風量100Nm3／min・m2で操業
し溶解を行つた。水冷ジヤケツト部４には溶融物
が20〜30mmセルフ・ライニング層８となつて被覆
され、水冷ジヤケツト部４の保護と同時に溶融物
中へ鉄分の混入を防止している。この様にして溶
解された溶融物は炉床部７に設けた出湯口６より
水槽に投入し、水砕乾燥後添加剤の基材とした。
炉が定常状態になつて１時間毎に５回この基材を
採集し分析を行つた結果は表１に示すとおりであ
る。本基材の成分変動は少く品質の均一性を示し
ている。
本基材97重量部に、溶融速度調整剤としてカー
ボンブラツク３重量部とバインダーとしてＣ・
MCを加え均一に混合した後、造粒を行ない連続
鋳造用添加剤とした。本添加剤を低炭アルミキル
ド鋼の連続鋳造用（引抜速度1.0ｍ／min）に使
用した結果は作業性が良く、又鋳片の欠陥も無く
良好であつた。
The present invention relates to a new method for producing a base material for casting additives used in steel ingot making and continuous casting. Conventionally, metal oxides, metal fluorides, and carbonates of alkaline earth metals have been used as the main raw materials (hereinafter simply referred to as raw materials) for additives for casting. 48765, Tokukai Akira
51-94424, JP 53-65212, etc., CaO,
Metal oxides such as Al 2 O 3 , SiO 2 , MgO, Na 2 O, B 2 O 3 , metal fluorides such as CaF 2 , AlF 3 , NaF, Na 3 AlF 6 , alkaline earth metals such as CaCO 3 Carbonates are shown, and their raw materials include portland cement, lime, blast furnace slag, dicalcium silicate, etc. as CaO sources, silica sand, flyash, shirasu, wollastonite, etc. as SiO 2 sources, and silica as Al 2 O 3 source. , mullite, etc., borax etc. as a source of B 2 O 3 , soda ash etc. as a source of Na 2 O, dolomite etc. as a source of MgO, fluorite as a source of CaF 2 , cryolite as a source of Na 3 AlF 6 , limestone as a source of CaCO 3 It is shown. These materials may be used either unheated or heat-treated, but those fired or melted through heat treatment are more susceptible to sludge formation and moisture content than additives made from non-heat-treated materials. Excellent in preventing trouble. Raw materials produced by heat treatment include blast furnace slag and glass powder, and natural materials such as basalt, wollastonite, and shirasu. However, since these products have large variations in their components, the components of the resulting additives also vary widely. Moreover, when these materials are used as raw materials, the composition of the raw materials is limited, so there are drawbacks such as the types of additives that can be obtained are limited to those with a certain composition. On the other hand, although attempts have been made to melt raw raw materials in a furnace, a method for economically obtaining a molten material with less variation in composition has not yet been realized. When an electric furnace is used as a melting furnace, there is a problem particularly in terms of electric power cost, and there is a problem in that a large amount of electric power is used for melting, for example, 100 KWH/Ton or more. Furthermore, since melting in an electric furnace involves high temperatures, there are problems such as poor yields of fluorides and alkali metals. The present invention was made with the aim of solving these problems, and the raw material for the additive for steel casting is a coke ratio of 16 to 28% and an air flow rate of 90 to 110 Nm 3 /min・m 2
The present invention provides a method for producing a base material for an additive for steel casting by melting in a water-cooled cupola, cooling and pulverizing. The present invention will be explained in detail below. The reason why a cupola melting furnace is used is because it is the cheapest in terms of fuel cost compared to other furnaces, and also because it can melt raw materials such as fluorides and alkali metals at a high yield. Moreover, the reason why the cupola is water-cooled is that since the furnace wall material does not act, disadvantages such as fluctuations in the composition of the melt due to consumption of the furnace wall material and the inability to operate for a long time can be avoided. Coke ratio of charging raw material and coke to 16-28%
The reason why the air flow rate is set at 90 to 110Nm 3 /min・m 2 is that outside these ranges, it tends to be difficult to operate the cupola, and furthermore, the dispersion of the melted ingredients of the raw materials becomes large. This is also because the yield of fluorides and alkali metals tends to be poor. The raw materials and coke are charged into the Kyupora at the above-mentioned ratio and melted at the above-mentioned air flow rate, and this melt is pulverized by water pulverization to form the base material of the additive. In this way, one or more melting rate regulators such as carbon, boron nitride, lithium carbonate, and sodium fluoride, flux, or a small amount of component regulators are added to the base material obtained, depending on the purpose of use. In some cases, it is used as an additive in products, and in other cases, it is used as a product without adding anything else. Examples of the present invention will be described below. Example 1 Bed coke 2 was charged into a water-cooled cupola 1 with a diameter of 650 mm as shown in Fig. 1, and then 34.5 wt% of silica, 40.0 wt% of slaked lime, 14.0 wt% of soda carbonate, and 11.5 wt of fluorite were charged.
% as raw material 3, coke 18 for 80 parts by weight of raw material
After the bed coke 2 was ignited, the coke was melted by operating at an air flow rate of 100 Nm 3 /min·m 2 from the tuyere 5. The water-cooled jacket portion 4 is coated with a 20-30 mm self-lining layer 8 of molten material, which protects the water-cooled jacket portion 4 and at the same time prevents iron from entering the molten material. The thus-dissolved molten material was poured into a water tank through a tap hole 6 provided in the hearth 7, and after being granulated and dried, it was used as a base material for an additive.
After the furnace was in a steady state, this base material was collected and analyzed five times every hour. The results are shown in Table 1. The composition of this base material has little variation, indicating uniform quality. 97 parts by weight of this base material, 3 parts by weight of carbon black as a melting rate regulator, and C.
After adding MC and mixing it uniformly, it was granulated and used as an additive for continuous casting. When this additive was used for continuous casting of low carbon aluminum killed steel (with a drawing speed of 1.0 m/min), the workability was good and there were no defects in the slabs.
【表】
実施例 ２
径1000mmの水平式キユポラにベツドコークスを
装入し、次に硅石31.4wt％、消石灰22.6wt％、ア
ルミナ1wt％、炭酸ソーダ20.0wt％、蛍石25.0wt
％を原料として原料80重量部に対しコークス16重
量部の比率で装入し、送風量90Nm3／min・m2で
操業し溶解を行つた。この様にして溶解された溶
融物は水砕後乾燥し添加剤の基材とした。
炉が定常状態になつて、１時間毎に５回この基
材を採取し分析を行つた結果は表２に示すとおり
である。本基材の成分の変動は少く品質の均一性
を示している。[Table] Example 2 Bed coke was charged into a horizontal cupola with a diameter of 1000 mm, and then 31.4 wt% silica, 22.6 wt% slaked lime, 1 wt% alumina, 20.0 wt% soda carbonate, and 25.0 wt% fluorite were added.
The coke was charged at a ratio of 16 parts by weight to 80 parts by weight of the raw material and melted by operating at an air flow rate of 90 Nm 3 /min·m 2 . The molten material thus dissolved was crushed into water and then dried to serve as a base material for additives. After the furnace was in a steady state, the base material was sampled five times every hour and analyzed. The results are shown in Table 2. There is little variation in the components of this base material, indicating uniformity in quality.
【表】
以上、述べた様に本発明によれば経済的に成分
変動の少い添加剤の基材を得る事が出来る。しか
も、生の原料を使用した場合は不向とされてい
た、水酸化物、炭酸塩、結晶水を含む原料でも本
発明では制限なく使用出来、使用する原料に制限
が無く、目的とする成分の基材を自由に製造する
事が出来る。更に、その基材は最終目的の添加剤
成分と同一にする事も出来、又はそれに近い基材
とする事によつて使用目的に応じて少量の溶融速
度調整剤、フラツクス、成分調整材の１種又はそ
れ以上を加えて目的の添加剤とすることが可能な
基材を得る事が出来る。[Table] As described above, according to the present invention, it is possible to economically obtain an additive base material with little variation in composition. Moreover, raw materials containing hydroxides, carbonates, and water of crystallization, which were considered unsuitable when using raw raw materials, can be used without restriction in the present invention, and there are no restrictions on the raw materials used, and the desired components can be base materials can be manufactured freely. Furthermore, the base material can be the same as the final target additive component, or by using a base material close to it, a small amount of melting rate modifier, flux, or component adjustment material can be added depending on the purpose of use. A base material can be obtained to which one or more species can be added to make the desired additive.
第１図は本発明を実施するための水冷式キユポ
ラの断面説明図である。
１……キユポラ、２……ベツドコークス、３…
…添加材原料、４……水冷ジヤケツト、５……羽
口、６……出湯口、７……炉床、８……セルフ・
ライニング。
FIG. 1 is an explanatory cross-sectional view of a water-cooled cupola for implementing the present invention. 1...Kyupora, 2...Bedcoke, 3...
... Additive material raw material, 4 ... Water cooling jacket, 5 ... Tuyere, 6 ... Tap hole, 7 ... Hearth, 8 ... Self-heating
lining.
Claims (1)
の炭酸塩からなる鋼の鋳造用添加剤の原料を、コ
ークス比16〜28％、送風量90〜110Nm3／min・
m2で水冷式キユポラで溶解し、冷却粉砕し鋼の鋳
造用添加剤の基材とすることを特徴とする、鋼の
鋳造用添加剤の基材を製造する方法。1 Raw materials for steel casting additives consisting of metal oxides, metal fluorides, and carbonates of alkaline earth metals were mixed at a coke ratio of 16 to 28% and an air flow rate of 90 to 110 Nm 3 /min.
1. A method for producing a base material for a steel casting additive, which comprises melting it in a water-cooled cupola at m2 , cooling and crushing it to form a base material for a steel casting additive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13800382A JPS5930450A (en) | 1982-08-10 | 1982-08-10 | Method for producing base material for additive for casting of steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13800382A JPS5930450A (en) | 1982-08-10 | 1982-08-10 | Method for producing base material for additive for casting of steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5930450A JPS5930450A (en) | 1984-02-18 |
| JPH0212661B2 true JPH0212661B2 (en) | 1990-03-23 |
Family
ID=15211783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13800382A Granted JPS5930450A (en) | 1982-08-10 | 1982-08-10 | Method for producing base material for additive for casting of steel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5930450A (en) |
-
1982
- 1982-08-10 JP JP13800382A patent/JPS5930450A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5930450A (en) | 1984-02-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4528035A (en) | Composition and process to create foaming slag cover for molten steel | |
| JP4727773B2 (en) | Mold powder for continuous casting of steel using synthetic calcium silicate | |
| JP3437153B2 (en) | Calcium aluminate desulfurizing agent | |
| US4508571A (en) | Mold additives for use in continuous casting | |
| CN1238531C (en) | Outside of furnace refining agent and its manufacturing method | |
| JP4223262B2 (en) | Mold powder for continuous casting of steel | |
| JPH0233465B2 (en) | ||
| NO137280B (en) | PROCEDURES FOR REFINING A STEEL MELT | |
| JPH0212661B2 (en) | ||
| JPH09164459A (en) | Mold powder for continuous casting of steel | |
| JPH0212662B2 (en) | ||
| CN1341755A (en) | Production process of silicon calcium barium liquid steel cleaning agent and its equipment | |
| JPH0699699B2 (en) | Melting point depressant for coal ash | |
| JPH09308951A (en) | Mold powder for continuously casting steel | |
| CN1227374C (en) | Production process of silicon calcium barium magnesium liquid steel cleaning agent and its production equipment | |
| NO144493B (en) | PROCEDURE FOR REFINING A STEEL MELT | |
| JP7510256B2 (en) | Base material used in the manufacture of steelmaking flux, steelmaking flux and its manufacturing method | |
| JPS597467A (en) | Casting mold additive for casting and its production | |
| JPH07323354A (en) | Mold powder for continuous casting | |
| SU1305178A1 (en) | Method for producing reagent for desulfurization of molten cast iron | |
| SU142559A1 (en) | Electrothermal method for producing fused cement clinker | |
| JPS6330101B2 (en) | ||
| JP2025155307A (en) | Mold Powder | |
| CN1348996A (en) | Production process and equipment for Si-Ca-Mg agent for purifying molten steel | |
| SU1013095A1 (en) | Flux for continuous casting of cadmium bronze |