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Molten iron heat insulation agent and preparation method thereof

The technology of heat preservation agent and molten iron is applied in the field of converter steelmaking, which can solve the problems of increasing steelmaking cost, worsening operating environment and high price, and achieving the effect of promoting ecology and environmental protection, good heat preservation effect and less pollution.

Inactive Publication Date: 2016-05-04
CHONGQING HAIDE METALLURGY MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional process of heat preservation of molten iron mainly uses carbonized rice husk as the main raw material for heat preservation. At present, the supply of carbonized rice husk is often insufficient and the price is high, which not only increases the cost of steelmaking;

Method used

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  • Molten iron heat insulation agent and preparation method thereof
  • Molten iron heat insulation agent and preparation method thereof
  • Molten iron heat insulation agent and preparation method thereof

Examples

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preparation example Construction

[0018] A preparation method for molten iron heat insulating agent, comprising the following steps:

[0019] (1) Various qualified raw materials are weighed and mixed according to the ratio of raw materials, which are calculated in parts by weight;

[0020] (2) Pour the raw materials weighed in the step (1) from large to small into the blender and stir, so that various raw materials are evenly mixed in the blender;

[0021] (3) The homogeneous mixture prepared in step (2) is weighed and packaged as required.

[0022] The index of mixed homogeneous product is:

[0023] chemical composition:

[0024]

example example 1

[0027] A thermal insulation agent for molten iron, comprising the following raw materials in parts by weight: 50 parts of fly ash, 15 parts of dolomite, 10 parts of vermiculite, 4 parts of acidified graphite, and 21 parts of cement clinker. Among them, fly ash is 100-mesh granular material; dolomite is 65-mesh granular material; vermiculite is 70-mesh granular material; acidified graphite is 80-mesh granular material with an expansion rate of 100 times; cement clinker is 68-mesh granular material.

[0028] The preparation method of the molten iron heat-retaining agent of the present embodiment may further comprise the steps:

[0029] (1) Take by weighing 50 parts of fly ash, 15 parts of dolomite, 10 parts of vermiculite, 4 parts of acidified graphite and 21 parts of cement clinker that meet the above specification requirements, and then mix the above-mentioned various raw materials;

[0030] (2) Pour the raw materials weighed in step (1) into the blender and stir, so that vari...

Embodiment 2

[0035] A thermal insulation agent for molten iron, comprising the following raw materials in parts by weight: 55 parts of fly ash, 13 parts of dolomite, 15 parts of vermiculite, 5 parts of acidified graphite, and 12 parts of cement clinker. Among them, fly ash is 120-mesh granular material; dolomite is 60-mesh granular material; vermiculite is 65-mesh granular material; acidified graphite is 75-mesh granular material with an expansion rate of 100 times; cement clinker is 80-mesh granular material.

[0036] The preparation method of the molten iron heat-retaining agent of the present embodiment may further comprise the steps:

[0037] (1) Take by weighing 55 parts of fly ash, 13 parts of dolomite, 5 parts of vermiculite, 5 parts of acidified graphite, and 12 parts of cement clinker that meet the above specification requirements, and then mix the above-mentioned various raw materials;

[0038] (2) Pour the various raw materials weighed in the step (1) from large to small into th...

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Abstract

The invention discloses a molten iron heat insulation agent which comprises the following raw materials in part by weight: 50-60 parts of coal ash, 10-15 parts of dolomite, 8-15 parts of vermiculite, 3-5 parts of acidized graphite and 10-20 parts of cement clinker. The invention further provides a preparation method of the heat insulation agent. The preparation method comprises the following steps of weighing, stirring and packaging. The molten iron heat insulation agent has the advantages of being reliable in raw materials and relative low in price and is not easy to diffuse in the using process.

Description

technical field [0001] The invention belongs to the field of converter steelmaking, and in particular relates to a hot metal heat insulating agent and a preparation method thereof. Background technique [0002] The large and medium-sized blast furnaces in my country can produce thousands of tons or even 10,000 tons of molten iron per day, and these molten irons are sent to steelmaking through canning. Due to the different conditions of each factory and the different transportation distances, the temperature of molten iron will drop by 31-59°C during the transportation process, which will not only affect the consumption of molten steel in smelting, but also cause the iron cans to stick. Therefore, thermal insulation is usually used in the process of transferring molten iron. Thermal insulation is one of the important materials in the production of iron and steel plants. The molten iron is not secondary oxidized. [0003] The traditional process of heat preservation for molt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C7/00C21C1/00
CPCC21C7/00C21C1/00
Inventor 付彬付雍
Owner CHONGQING HAIDE METALLURGY MATERIAL CO LTD
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