【発明の詳細な説明】[Detailed description of the invention]
〔産業上の利用分野〕
本発明は銅製練の一工程である転炉作業にて産
出されるからみを浮遊選鉱する工程で発生し、尾
鉱として埋立処理用に供せられている鉄精粉と粘
土の混在する焼成品で主に建築物内外装の装飾部
材として用いられる鉄精粉焼成タイルに関する。
〔従来の技術〕
銅製練で発生するからみは赤褐色の審美性に富
む色彩を呈する事から、建築物の内外装用に利用
され、熔融した状態のからみをそのまま希望する
寸法の鋳型に鋳込んだ後、数日に亘つて鋳込まれ
たからみを保温徐冷する事により、建築物内外装
を主たる用途とする装飾部材が作られていた。
〔発明が解決しようとする問題点〕
然し乍ら、熔融からみを鋳造して成型する装飾
部材は徐冷時の不均一冷却等を原因とする亀裂の
発生や鋳込形状の不良、更には板厚の不揃等によ
る不良品の発生が多く、装飾部材として製品化さ
れる割合が鋳込まれた品物に対して40％前後でし
かなかつた。
この為、銅製練によるからみが呈する審美性に
富む色彩を保有すると共に安定した品質が保証さ
れる装飾部材の大量供給が市場から待ち望まれて
いた。
〔問題点を解決する為の手段〕
本発明は、銅製練工程で発生する鉄精粉に10〜
50重量％の粘土を混在させ、加圧、焼成した鉄精
粉焼成タイルを提供する事により、銅製練で発生
するからみが呈する赤褐色の審美性に富む色彩を
保ちつつ、特定の形状寸法を確保し乍ら製品化率
の高い装飾部材として、建築物の内外装をその主
たる用途とする分野として供給せんとするもので
ある。
本発明でいう鉄精粉とは、その組成として第１
表に示す如く、鉄分を約50％、硅酸分を約20％含
有するものをいい、更に粘土とは、硅酸分を60〜
70％、アルミナ分を15〜25％含有する一般的な粘
土をいう。
[Industrial Application Field] The present invention is directed to the use of refined iron powder, which is generated in the process of flotation of the grains produced in the converter operation, which is a step of copper smelting, and is provided as tailings for landfill processing. This article relates to refined iron powder fired tiles, which are a fired product containing a mixture of clay and clay and are mainly used as decorative members for the interior and exterior of buildings. [Conventional technology] The tangles produced during copper smelting have an aesthetically pleasing reddish-brown color and are used for the interior and exterior of buildings. After the molten tangles are cast into molds of desired dimensions, Decorative parts, primarily used for the interior and exterior of buildings, were made by slowly cooling and retaining the heat of the cast iron over several days. [Problems to be Solved by the Invention] However, decorative members that are molded by casting molten resin are susceptible to cracks and poor casting shapes due to uneven cooling during slow cooling, as well as problems with plate thickness. There were many defective products due to misalignment, etc., and the proportion of products made into decorative parts was only around 40% compared to cast products. For this reason, the market has been looking forward to a mass supply of decorative members that retain the aesthetically pleasing colors of copper smelting and are guaranteed to have stable quality. [Means for solving the problem] The present invention provides iron powder generated in the copper smelting process with a
By providing refined iron powder fired tiles that are mixed with 50% clay, pressed and fired, we maintain the aesthetically rich reddish-brown color of the entanglements that occur during copper smelting, while ensuring specific shapes and dimensions. However, it is intended to be supplied as a decorative member with a high commercialization rate, mainly for the interior and exterior of buildings. The refined iron powder referred to in the present invention refers to
As shown in the table, clay refers to clay that contains about 50% iron and about 20% silicic acid, and clay contains 60% to 60% silicic acid.
A general clay containing 70% alumina and 15-25% alumina.
〔作用〕[Effect]
本発明で利用する粘土分の混在率を10〜50重量
％に限定したのは、粘土分が10％未満では、鉄精
粉と粘土を混在させた後に加圧成形した中間成形
物を焼成工程へ移す段階での損壊が多くなる為で
あり、粘土分が50％超えると乾燥、焼成工程での
収縮率が増加して、一定形状を保持し難くなるた
めであると共に、装飾部材としてからみが呈する
赤褐色の審美性に富む色彩を保てなくなる為であ
る。
〔実施例〕
250μ以下の粒径に整粒された鉄精粉に粘土を
30重量％混在させ、含水分を６％とした組成物に
300Kg／cm2の圧力を加え100mm×100mmの面積と７
mmの厚みを持つ中間成形体とした後、1220℃で焼
成して得た焼成品は第２表に示す如き物性を有
し、加圧成形した中間成形品より最終製品までの
製品化率は95％を超えた。
The reason why the clay content used in the present invention is limited to 10 to 50% by weight is that if the clay content is less than 10%, the intermediate molded product that is pressure-formed after mixing refined iron powder and clay is not used in the firing process. This is because the clay content exceeds 50% and the shrinkage rate increases during the drying and firing process, making it difficult to maintain a constant shape. This is because it becomes impossible to maintain the aesthetically pleasing reddish-brown color that it exhibits. [Example] Adding clay to refined iron powder sized to a particle size of 250μ or less
30% by weight to create a composition with a moisture content of 6%.
Apply a pressure of 300Kg/cm 2 to an area of 100mm x 100mm and 7
After making an intermediate molded product with a thickness of mm, the fired product obtained by firing at 1220℃ has the physical properties shown in Table 2, and the production rate from the pressure-formed intermediate molded product to the final product is Over 95%.
〔比較例〕[Comparative example]
銅製練工程で発生した鉄分を40％，硅酸分を33
％含有する熔融からみを鋳型(A)150mm×150mm×７
mmｔと鋳型(B)150mm×75mm×７mmｔに鋳込み、
LPGで加熱保温しながら２日に亘り徐冷して得
た装飾部材の製品化率は第３表に示す如くであつ
て、36〜46％でしかなかつた。
The iron content generated in the copper smelting process is 40%, and the silicic acid content is 33%.
Mold (A) 150mm x 150mm x 7
mmt and cast into mold (B) 150mm x 75mm x 7mmt,
The commercialization rate of the decorative members obtained by slow cooling for two days while heating with LPG was as shown in Table 3, and was only 36 to 46%.
〔発明の効果〕〔Effect of the invention〕
本発明の実施により、銅製練工程で得られるか
らみが持つ特有の赤褐色の審美性に富む色彩を有
する装飾部材を安定した品質で大量に供給出来る
様になつた。
By carrying out the present invention, it has become possible to supply a large quantity of decorative members with stable quality that has the characteristic reddish-brown aesthetic color of the entanglement obtained in the copper smelting process.
【図面の簡単な説明】[Brief explanation of drawings]
第１図は鉄精粉と粘土の混在比に対する製品歩
留りの関係を、第２図は1220℃で焼成した場合の
鉄精粉と粘土の混在比に対する製品の収縮率の関
係を、第３図は鉄精粉と粘土を混在する成型品に
ついて、組成物の含有水分と加圧圧力の関係を、
第４図は粘土混在率を30重量％とした場合の組成
物焼成温度と焼成品物性の関係を示す図である。
Figure 1 shows the relationship between the product yield and the mixing ratio of refined iron powder and clay. Figure 2 shows the relationship between the shrinkage rate of the product and the mixing ratio of refined iron powder and clay when fired at 1220℃. For molded products containing refined iron powder and clay, the relationship between the moisture content of the composition and the pressurizing pressure is as follows.
FIG. 4 is a diagram showing the relationship between the composition firing temperature and the physical properties of the fired product when the clay content is 30% by weight.