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Preparation method for producing aluminum-silicon alloy cast ingot by using waste glass

A technology of aluminum-silicon alloy and waste glass, applied in the field of aluminum-silicon alloy, can solve problems such as energy consumption, reduction of silicon diffusion, and impact on production efficiency and cost

Inactive Publication Date: 2021-03-12
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the melting point of silicon is 1440°C, the diffusion rate is slow, so the manufacturing process takes a long time and consumes a lot of energy
In addition, in the process of making alloys, oxides (SiO 2 ), will further reduce the diffusion of silicon, and also make the consumption rate of silicon as high as 10-20%, seriously affecting production efficiency and cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0021] The invention provides a preparation method for producing aluminum-silicon alloy ingots from waste glass, comprising the following steps:

[0022] Mix waste glass, waste aluminum, waste aluminum ash and a carbonaceous reducing agent and smelt at high temperature to obtain an aluminum-silicon alloy liquid, which includes liquid silicon and liquid aluminum; the liquid silicon and liquid aluminum meet the requirements of the obtained Element ratio of Al-Si alloy ingot;

[0023] The aluminum-silicon alloy liquid is cast to obtain an aluminum-silicon alloy ingot.

[0024] Unless otherwise specified, the present invention has no special requirements on the sources of the raw materials, which can be obtained by means known to those skilled in the art.

[0025] In the invention, waste glass, waste aluminum, waste aluminum ash and carbonaceous reducing agent are smelted to obtain aluminum-silicon alloy liquid, and the aluminum-silicon alloy liquid includes liquid silicon and li...

Embodiment 1

[0050] The production target is to produce 1000kg of aluminum-silicon alloy whose mass content is 20% of silicon element and 80% of aluminum element;

[0051] 650kg of waste glass (560kg of silicon dioxide), 1000kg of waste aluminum ash (containing Al 2 o 3 ), 620kg of waste aluminum block (Al, 600Kg), 1500kg of coke after drying, after crushing and mixing into blocks, put them into the smelting furnace, raise the temperature of the smelting furnace to 2100°C, and generate liquid silicon and Aluminum is directly mixed into a liquid aluminum-silicon alloy; then sent to the intermediate batching furnace to take samples for composition verification. When the mass content of silicon and aluminum elements is not satisfied, continue to add aluminum-silicon master alloys or silicon and aluminum elements to the ingredients The composition is adjusted until the verification meets the mass ratio of aluminum-silicon elements, then a slag remover is added and nitrogen gas is introduced t...

Embodiment 2～8

[0055] The difference between the preparation methods of Examples 2-8 and Example 1 is that when the heat preservation is left to stand, the master alloy or elemental raw material of Mg, Fe, Cu, Mn, Ni, Zn and Ti is first added according to the element composition in Table 1 , and then check the composition of Si, AL, Mg, Fe, Cu, Mn, Ni, Zn and Ti elements according to the composition of each element in Table 1, if Si, AL, Mg, Fe, Cu, Mn, Ni When the mass content of , Zn and Ti elements, continue to add master alloys or simple substances to the ingredients until the mass ratio of each element is verified.

[0056] Table 1 Aluminum alloy ingot chemical composition (mass percentage)

[0057] serial number Al Si Mg Fe Cu mn Ni Zn Ti Example 2 margin 8.51 0.02 0.03 0.04 0.03 0.01 0.02 0.02 Example 3 margin 12.22 0.03 0.05 0.01 0.04 0.02 0.03 0.02 Example 4 margin 20.52 0.01 0.02 0.03 0.04 0.03 0.02 0.03 Ex...

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Abstract

The invention relates to the technical field of aluminum-silicon alloy, in particular to a preparation method for producing an aluminum-silicon alloy cast ingot by using waste glass. According to thepreparation method, the waste glass, waste aluminum, waste aluminum ash and a carbonaceous reducing agent are smelted, liquid silicon and metal aluminum are generated through a chemical reaction in asmelting process, the reaction principle is that 2Al, Si and 5CO are generated through reaction of Al2O3, SiO2 and 5C, the liquid silicon and the metal aluminum are directly mixed into uniform aluminum-silicon alloy liquid, an aluminum alloy cast ingot is obtained after casting, according to the preparation method, production of the aluminum-silicon alloy is completed in one step, the complex process of separately smelting two minerals of silicon and aluminum is simplified, a large amount of energy can be saved, and the cost can be reduced.

Description

technical field [0001] The invention relates to the technical field of aluminum-silicon alloys, in particular to a preparation method for producing aluminum-silicon alloy ingots from waste glass. Background technique [0002] Glass is a substance commonly used in modern human life. It can be made into various utensils, utensils, flat glass, etc. Ordinary glass is mainly composed of silicon dioxide (SiO 2 , the main component of quartz sand). Sodium carbonate (Na 2 CO 3 , ie soda) and potassium carbonate (K 2 CO 3 , potash) to reduce the process temperature. Because of the large amount of glass used, there are also many wastes. For the sustainable use of resources, waste glass and products can be collected to turn harm into benefit and waste into treasure. There are several types of recycling of glass products: as a flux for casting, transformation, recycling, raw material recovery and reuse, etc. Although these applications are very successful, the added value of rec...

Claims

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Application Information

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IPC IPC(8): C22B5/10C22B7/00C22B21/02C22C1/02C22C21/02
CPCC22B5/10C22B7/001C22B21/02C22C1/026C22C21/02Y02P10/20
Inventor 杨文超冀守勋张军刘林
Owner NORTHWESTERN POLYTECHNICAL UNIV
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