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Method for manufacturing high-strength sintered building material from molten steel slag

A building material and high-strength technology, applied in the production and application of ceramic materials, clay products, etc., can solve the problems of unreasonable disposal of industrial waste and large energy consumption of molten steel slag, so as to reduce wall shedding and increase economic benefits , the effect of reducing costs

Inactive Publication Date: 2020-11-20
北京光明橡塑制品厂
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the existing conventional problems of high energy consumption for molten steel slag and no reasonable treatment for industrial waste, and to provide a method for preparing high-strength building materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Step 1): Fly ash is selected as the auxiliary material, and carbon is selected as the reducing agent. Put the steel slag into the furnace, and when the waste heat temperature in the furnace reaches 1200°C and 1500°C, add the auxiliary material fly ash and reducing agent carbon into the furnace;

[0026] Step 2): Carbon is used to further provide energy, and carbon reduces iron oxide in steel slag to form iron, and reduces ferric oxide in fly ash to form iron. Iron is extracted by magnetic method;

[0027] Step 3): According to the waste heat when melting steel slag and the heat generated when carbon is burned, solid waste materials such as fly ash are further sintered, and the carbon dioxide produced and calcium oxide, magnesium oxide and other substances in steel slag are used to form building materials.

Embodiment 2

[0029] Step 1): Mineral powder is selected as the auxiliary material, and bamboo charcoal powder is selected as the reducing agent. Put steel slag into the furnace, and when the waste heat temperature in the furnace reaches 1200°C and 1500°C, add auxiliary material mineral powder and reducing agent bamboo charcoal powder into the furnace;

[0030] Step 2): The bamboo charcoal powder is used to further provide energy, and the bamboo charcoal powder reduces the iron oxide in the steel slag to form iron, and reduces the ferroferric oxide in the ore powder to form iron. Iron is extracted by magnetic method;

[0031] Step 3): According to the waste heat when melting steel slag and the heat generated when carbon is burned, the solid waste materials in the ore powder are further sintered, and the carbon dioxide produced and the calcium oxide, magnesium oxide and other substances in the steel slag are used to form building materials. This kind of building material is a foamed lightwe...

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Abstract

The invention relates to a method for preparing a high-strength sintered building material by utilizing waste heat (or adding a small amount of energy) during steel slag melting. According to the method, waste heat generated by steel slag melting is mainly used for reinforcing waste materials, a small amount of energy, auxiliary materials and a reducing agent are added on the basis, iron in moltensteel slag is reduced through the reducing agent, a calcium silicate material in the molten steel slag is cooled, and then the high-strength sintered calcium silicate building material is prepared. According to the method for preparing the building material, energy is saved, the solid waste material can be effectively utilized, the economic benefit is improved, the preparation cost is greatly reduced, the environmental pollution of the solid waste material is reduced, and the prepared high-strength sintered building material is excellent in performance and has a great development prospect.

Description

technical field [0001] The invention relates to a method for preparing high-strength building materials, in particular to a method for preparing corresponding high-strength building materials by utilizing waste heat of solid waste materials and molten steel slag. Background technique [0002] With the further advocacy of environmental protection and the maximization of the economic benefits of rational utilization of solid waste materials, the topic of combining the use of steel slag waste heat and solid waste materials has received more and more attention. At present, more and more energy is consumed by molten steel slag, and there is no way to make good use of it. Solid waste has a great impact on industrial production and the living environment, but usually it is directly treated and discharged, which increases costs and cannot be used well. Contents of the invention [0003] The purpose of the present invention is to overcome the existing conventional problems of high...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/138C04B33/135C04B33/132C04B33/13
CPCC04B33/138C04B33/1352C04B33/132C04B33/131Y02P40/60
Inventor 兰昊黄传兵席君杰钱强刘国升刘云徐才于守泉李世建高项东
Owner 北京光明橡塑制品厂
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