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Raw material for preparing aluminum-silicon alloy by electro-thermal process

The technology of aluminum-silicon alloy and electrothermal method is applied in the field of preparing raw material of aluminum-silicon alloy by electrothermal method, which can solve the problems of increasing the production cost of aluminum-silicon alloy, high raw material cost of aluminum-silicon alloy, complicated process, etc., achieving excellent performance and reducing production. Cost, simple process effect

Inactive Publication Date: 2006-01-25
登封电厂集团铝合金有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The kaolin concentrate in the raw materials used is obtained by beneficiating kaolin through complex processes, and its cost is much higher than that of kaolin; the carbon reducing agent in the raw materials used is mainly petroleum coke, and a small amount of bituminous coal is used, and its cost is relatively high; therefore, the produced The raw material cost of Al-Si alloy is higher
In addition, due to the impurities contained in the kyanite-sillimanite concentrate in the raw material such as ZrO 2 SiO 2 、TiO 2 , FeOTiO 2 , (Cr, Fe) 2 o 3 , was reduced during smelting, so that Zr, Ti, Fe, and Cr entered the alloy. To remove these harmful impurities, special metallurgical treatment must be carried out. Not only the process is complicated, but also the production cost of aluminum-silicon alloy will be increased.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] 1. Put alumina, kaolin produced in Shuozhou, Shanxi processed according to step 1 in the production method of the above-mentioned aluminum-silicon alloy, and bituminous coal produced in Shenfu Coal Field, Shaanxi, respectively in the raw material tank; The density of 3 tons of sodium sulfonate prepared with hot water at 35°C is 1.12 g / cm 3 The sodium lignosulfonate liquid is put into the insulation raw material tank.

[0041] 2, with the ratio of 58 tons of kaolin, 6 tons of alumina, 36 tons of bituminous coal, and 20 tons of the above-mentioned sodium lignosulfonate liquid, the aluminum-silicon alloy is produced according to the steps 3 and 4 in the production method of the above-mentioned aluminum-silicon alloy, and the output per hour is Aluminum-silicon alloy 1 ton. The weight percentage composition of the following elements in the aluminum-silicon alloy includes: aluminum 56, silicon 39, titanium 1.0, iron 1.0 calcium 0.4, carbon 1.4 and other impurities 1.2.

Embodiment 2

[0043] 1. Put alumina, the kaolin produced in Jiaozuo, Henan, and the bituminous coal produced in Shenfu Coalfield, Shaanxi, processed according to the step 1 in the above-mentioned aluminum-silicon alloy production method into the raw material tank respectively; 3 tons of calcium lignosulfonate with substance ≥55% prepared with hot water at 40°C has a density of 1.14 g / cm 3 The sodium lignosulfonate liquid is put into the insulation raw material tank.

[0044] 2, with the ratio of 54 tons of kaolin, 9 tons of alumina, 37 tons of bituminous coal, and 21 tons of the above-mentioned sodium lignosulfonate liquid, the aluminum-silicon alloy is produced according to the steps 3 and 4 in the production method of the above-mentioned aluminum-silicon alloy, and the output per hour is Aluminum-silicon alloy 1 ton. The weight percent composition of the following elements in the aluminum-silicon alloy includes: aluminum 58, silicon 36, titanium 0.9, iron 0.8 calcium 0.35, carbon 1.45 an...

Embodiment 3

[0046] 1. Put alumina, the kaolin produced in Shuozhou, Shanxi processed by step 1 in the production method of the above-mentioned aluminum-silicon alloy, and the bituminous coal produced in the Shenfu coal field in Shaanxi respectively in the raw material tank; 3 tons of sodium lignosulfonate with active substance ≥ 55% is prepared with hot water at 39°C and the density is 1.16 g / cm 3 The sodium lignosulfonate liquid is put into the insulation raw material tank.

[0047] 2, with the ratio of 53 tons of kaolin, 12 tons of alumina, 35 tons of bituminous coal, and 22 tons of the above-mentioned sodium lignosulfonate liquid, the aluminum-silicon alloy is produced according to the steps 3 and 4 in the production method of the above-mentioned aluminum-silicon alloy, and the output per hour is Aluminum-silicon alloy 1 ton. The weight percent composition of the following elements in the aluminum-silicon alloy includes: aluminum 61, silicon 33, titanium 0.8, iron 0.6 calcium 0.3, car...

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Abstract

This invention relates to the raw material in aluminum silicon alloy production, being composed of in weight percentage kleit 49-58% containing Fe2O3 up to or less than 1%, aluminum oxide 5-13%, smoke coal 34-38% containing >=32% of volatile share weight, 1.100-1.200grams / centimeter lignosulphonate liquid prepared from 20-22% gross weight of above three raw materials as well as 30-60 DEG C hot water. The cost is low, which causes the aluminum silicon alloy cost to reduce 15-20%, simultaneously aluminum silicon alloy contains few deleterious substance,and it is simple to remove the impurity. Aluminum silicon alloy prepared in the invention contains in weight percentage aluminum 56.7, silicon 38.8, titanium 0.87, iron 1.3, calcium 0.37, carbon 1.5 and other impurities 0.5 in average.

Description

technical field [0001] The invention relates to a raw material for preparing aluminum-silicon alloy, in particular to a raw material for preparing aluminum-silicon alloy by electrothermal method. Background technique [0002] At present, the raw materials used in Ukraine to produce aluminum-silicon alloys by electrothermal method include: kaolin concentrate, kyanite-sillimanite concentrate, alumina, carbon reducing agent and binder-lignosulfonate. The kaolin concentrate in the raw materials used is obtained by beneficiating kaolin through complex processes, and its cost is much higher than that of kaolin; the carbon reducing agent in the raw materials used is mainly petroleum coke, and a small amount of bituminous coal is used, and its cost is relatively high; therefore, the produced The cost of raw materials for aluminum-silicon alloys is relatively high. In addition, due to the impurities contained in the kyanite-sillimanite concentrate in the raw material such as ZrO 2 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B4/06C22B4/02C22C1/00C22C21/02
Inventor 谢奇孙世锋张天清杨明生米·依加西克阿·恩阿弗卡茹克依·弗列别捷夫
Owner 登封电厂集团铝合金有限公司
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