Method for utilizing waste refractory materials

A technology of waste refractory materials and refractory materials, which is applied in the field of comprehensive utilization of resources, can solve problems such as waste of metal resources, utilization restrictions, and poor resistance to melting damage of construction objects, and achieve the effect of reducing negative impacts and improving utilization efficiency

Inactive Publication Date: 2012-03-21
SHANXI TAIGANG STAINLESS STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Waste refractory materials discharged from iron and steel plants can be used as roadbed materials, landfill materials or unshaped refractory materials, but due to inclusi

Method used

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  • Method for utilizing waste refractory materials
  • Method for utilizing waste refractory materials

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Experimental program
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Effect test

Embodiment 1

[0017] 1. Cut off the slag layer and metamorphic layer of the waste magnesia-calcium refractories, which are called cutting blocks;

[0018] 2. After crushing the cutting block, it becomes magnesium-calcium powder;

[0019] 3. Sieve out magnesium-calcium powder with a particle size of less than 3mm for batching. The weight percentage of the batching is 27.2% of Jianshan mineral powder, 8.3% of Australian mineral powder, 18% of YD mineral powder, 3% of South African mineral powder, and goblin mineral powder 10.1%, dust removal ash 5%, magnesia-calcium brick powder 2%, limestone 3%, blast furnace return ore powder 13%, lime 5.8%, coke powder 4.5%;

[0020] 4. Pelletizing and granulating: Roller granulating and granulating is carried out according to the above-mentioned ingredients, and the process is the same as the existing granulating and granulating process.

[0021] 5. Sintering: The balls made in the previous step are sintered, and the process is the same as the existing p...

Embodiment 2

[0022] Embodiment two: the percentage by weight of the batching of this embodiment is 27.2% of Jianshan ore, 7.9% of Australian ore, 18% of YD ore, 3% of South Africa ore, 10.1% of goblin ore, comprehensive 5%, magnesia-calcium brick 2.5%, ash Stone 3%, high return 13%, white ash 5.6%, coke powder 4.5, other steps are identical with embodiment one.

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Abstract

The invention discloses a method for utilizing waste refractory materials. The method is characterized by comprising technical procedures, including cutting, smashing, sieving, burdening, pelletizing and sintering, and comprises the following specific steps of: (1) cutting the slag layers and the metamorphic layers of waste magnesium-calcium refractory materials to obtain cutting blocks; (2) smashing the cutting blocks to obtain magnesium-calcium powder; (3) screening the magnesium-calcium powder of which the particle size is smaller than 3 millimeters, and burdening 75-85 percent by weight of concentrated ore powder, 8-9 percent by weight of fusing agent, 3-5 percent by weight of comprehensive powder, 4-5 percent by weight of coke powder and 2-3 percent by weight of magnesium-calcium powder; (4) pelletizing; and (5) sintering. By adopting the method, a large quantity of waste magnesium-calcium bricks can be treated, recycling of magnesium-calcium refractory materials is realized, the utilization efficiency of resources is increased, and the negative influences of wastes on the environment are reduced.

Description

technical field [0001] The invention relates to a utilization method of waste refractory materials, belonging to the field of comprehensive utilization of resources. Background technique [0002] In recent years, with the continuous and rapid growth of domestic steel production, the problems of environmental pollution and raw material depletion caused by waste refractory materials have become more and more prominent. How to solve waste refractory materials, turn waste into treasure, and realize zero discharge of used refractory materials It is a problem facing the whole world. [0003] Waste refractory materials discharged from iron and steel plants can be used as roadbed materials, landfill materials or unshaped refractory materials, but due to inclusions (such as adhered steel slag, iron particles, etc.) The melting resistance of the construction body becomes poor, the utilization is limited, and some metal resources are wasted. Contents of the invention [0004] In or...

Claims

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Application Information

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IPC IPC(8): C04B35/66
Inventor 樊猛辉贺素珍叶文成史永林李建军
Owner SHANXI TAIGANG STAINLESS STEEL CO LTD
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