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Environment-friendly slag heat insulating agent for high and medium furnace ironmaking and preparation method thereof

A technology of heat preservation agent and adhesive, which is used in medium furnace ironmaking or slag heat preservation agent for ladle. It can solve the problems of low utilization rate of equipment and achieve the effect of prolonging service life, reducing cost and reducing erosion.

Active Publication Date: 2016-05-04
XIXIA JINYANG MINING & METALLURGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that iron slag and foam produced by blast furnace ironmaking cause low utilization rate of equipment, and an environmentally friendly slag heat insulating agent for high and medium furnace ironmaking and its preparation method are provided

Method used

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  • Environment-friendly slag heat insulating agent for high and medium furnace ironmaking and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A defoaming slag heat preservation agent for blast furnace ironmaking, prepared from the following raw materials: flue ash 35-45kg, fluorosodium carbon 15-25kg, vermiculite soil 20-30kg, graphite 2-6kg, silica fume Stone 8-12kg, adhesive 1-3kg. Among them, the graphite is acidified graphite, the binder is a water-soluble binder, and the main component is starch; the main component of the flue ash is coal ash or cinder, and the content of C is 20-30%, SiO 2 , the content is 20%-35%; the main components of fluorosodium carbon are F ≥ 30%, Na ≥ 18% and C ≥ 30%; the main component of vermiculite soil is vermiculite soil raw ore, of which SiO 2 ≥40%, Al 2 o 3 ≥10-15%, expansion multiple 2-5 times.

[0023] Its preparation method is as follows: firstly make powder of each raw material, the particle size of the powder is 20-100 mesh, stir and mix for 7min-15min, then spray 7%-13% of the total raw material mass with water, continue stirring for 7min-15min, and then granulate...

Embodiment 2

[0025] A defoaming slag heat preservation agent for blast furnace ironmaking, prepared from the following raw materials: 35kg of flue ash, 15kg of fluorosodium carbon, 30kg of vermiculite soil, 5kg of graphite, 12kg of wollastonite, and 3kg of adhesive. Among them, the graphite is acidified graphite, the binder is a water-soluble binder, and the main component is starch; the main component of the flue ash is coal ash or cinder, and the content of C is 30%, SiO 2 , the content is 25%; the main components of fluorosodium carbon are F ≥ 30%, Na ≥ 18% and C ≥ 30%; the main component of vermiculite soil is vermiculite soil raw ore, of which SiO 2 ≥40%, Al 2 o 3 ≥10%, the expansion multiple is 2-5 times.

[0026] Its preparation method is as follows: firstly make powder of each raw material, the particle size of the powder is 20 mesh, stir and mix for 7 minutes, then spray 7% water of the total raw material mass, continue stirring for 7-15 minutes, then granulate, and finally dry ...

Embodiment 3

[0028] A defoaming slag heat preservation agent for blast furnace ironmaking, prepared from the following raw materials: 37kg of flue ash, 21kg of sodium fluoride carbon, 24kg of vermiculite soil, 5kg of graphite, 10kg of wollastonite, and 3kg of adhesive. The graphite is acidified graphite, the binder is a water-soluble binder, and the main component is starch; the main component of the flue ash is coal ash or cinder, in which the C content is 28%, SiO 2 , the content is 27%; the main components of fluorosodium carbon are F ≥ 30%, Na ≥ 18% and C ≥ 30%; the main component of vermiculite soil is vermiculite soil raw ore, of which SiO 2 ≥40%, Al 2 o 3 ≥10-15%, expansion multiple 2-5 times.

[0029] Its preparation method is as follows: first, each raw material is powdered, the particle size of the powder is 50 mesh, stirred and mixed for 10 minutes, then sprayed with 9% water of the total raw material mass, continued to stir for 9 minutes, then granulated, and finally dried at...

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Abstract

The invention discloses an environment-friendly slagging heat-preservation agent used for blast and medium-furnace iron making and a preparation method thereof. The environment-friendly slagging heat-preservation agent is prepared from the following raw materials in parts by weight: 35-45 parts of flue ashes, 15-25 parts of fluorine-sodium carbon, 20-30 parts of vermiculite soil, 2-6 parts of graphite, 8-12 parts of wollastonite and 1-3 parts of adhesive. The preparation method of the environment-friendly slagging heat-preservation agent comprises the following steps: firstly, preparing raw materials into powder with grain size of 20-100 meshes, stirring and mixing for 7-15 minutes, spraying water accounting for 7%-13% mass of the total raw materials, and continuously stirring for 7-15 minutes; then, pelletizing; and finally, drying at 30-40 DEG C to prepare the product. According to the environment-friendly slagging heat-preservation agent and the preparation method thereof disclosed by the invention, the adopted flue ashes, the fluorine-sodium carbon, the vermiculite soil, the graphite, the wollastonite and the adhesive are taken as the raw materials, so that in a manufacturing process, the flue ashes, the fluorine-sodium carbon, the vermiculite soil, the acidified graphite and the wollastonite can be sufficiently adhered by using the adhesive; on the other hand, in a using process, the raw materials of the product do not produce dust and smoke, so that the product is free of dust and smoke in the using process, and free of environmental pollution.

Description

technical field [0001] The invention belongs to the field of slag heat insulating agent, in particular to a slag heat insulating agent used for high and medium furnace ironmaking or molten iron ladle. No dust and smoke are generated during use, and there is no environmental pollution. Background technique [0002] In recent years, my country's environmental pollution has been very serious, which has endangered the lives of each of us. The smog weather in winter brings great inconvenience to our life every year, and also makes respiratory diseases rise sharply. Therefore, it is the responsibility and obligation of every citizen to control and reduce environmental pollution, and to care and protect the environment. [0003] At present, the gas, dust, sewage and pollution produced by iron and steel enterprises are quite serious. In particular, ironmaking in high and medium furnaces inevitably produces a large amount of iron slag. The inherent physical properties and process ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21B5/00C21B11/00
Inventor 詹付海刘艳丽
Owner XIXIA JINYANG MINING & METALLURGY
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