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A kind of preparation method of high-efficiency composite molten iron desulfurizer

A high-efficiency technology for desulfurization of molten iron, applied in the field of iron and steel metallurgical auxiliary materials, can solve the problems of low desulfurization efficiency and high cost, and achieve the effects of improving desulfurization rate, preventing waste of lime resources, and shortening desulfurization cycle time.

Inactive Publication Date: 2017-12-05
WUHU JINLONG MOLD FORGING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems of high cost and low desulfurization efficiency of molten iron desulfurizer in the prior art, the present invention provides a preparation method of high-efficiency composite molten iron desulfurizer

Method used

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  • A kind of preparation method of high-efficiency composite molten iron desulfurizer
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  • A kind of preparation method of high-efficiency composite molten iron desulfurizer

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Effect test

Embodiment 1

[0036] A preparation method of an efficient composite molten iron desulfurizer, the steps of which are:

[0037] (1) Ingredients, prepare materials according to the following components and mass fractions:

[0038]

[0039] (2) Preparation process:

[0040] a. above-mentioned zinc chloride is carried out passivation treatment, and its technique is as follows:

[0041] Spraying: Spray the additive on the surface of the zinc chloride powder in the container, and spray and mix evenly while spraying; among them, the additive is mixed with 5 parts of cyclic dimethyl silicone oil, 5 parts of hydraulic oil and 5 parts of soybean oil made;

[0042] Heat preservation: heat preservation at 100-1050°C for 4 minutes, so that the additives are boiled and completely volatilized and absorbed by cooked zinc chloride to form a protective film;

[0043] b. After mixing the following ingredients with the material prepared in step a, dry pretreatment;

[0044]

[0045] Then pour the pas...

Embodiment 2

[0050] A preparation method of an efficient composite molten iron desulfurizer, the steps of which are:

[0051] (1) Ingredients, prepare materials according to the following components and mass fractions:

[0052]

[0053] (2) Preparation process:

[0054] a. above-mentioned zinc chloride is carried out passivation treatment, and its technique is as follows:

[0055] Spraying: Spray the additive on the surface of the zinc chloride powder in the container, and spray and mix evenly while spraying; among them, the additive is mixed with 6 parts of cyclic dimethyl silicone oil, 7 parts of hydraulic oil and 8 parts of soybean oil made;

[0056] Heat preservation: heat preservation at 100-1050°C for 4 minutes, so that the additives are boiled and completely volatilized and absorbed by cooked zinc chloride to form a protective film;

[0057] b. After mixing the following ingredients with the material prepared in step a, dry pretreatment;

[0058]

[0059] Then pour the pas...

Embodiment 3

[0064] A preparation method of an efficient composite molten iron desulfurizer, the steps of which are:

[0065] (1) Ingredients, prepare materials according to the following components and mass fractions:

[0066]

[0067] (2) Preparation process:

[0068] a. above-mentioned zinc chloride is carried out passivation treatment, and its technique is as follows:

[0069]Spraying: Spray the additive on the surface of the zinc chloride powder in the container, and spray and mix evenly while spraying; the additive is mixed with 10 parts of cyclic dimethyl silicone oil, 10 parts of hydraulic oil and 10 parts of soybean oil made;

[0070] Heat preservation: heat preservation at 100-1050°C for 4 minutes, so that the additives are boiled and completely volatilized and absorbed by cooked zinc chloride to form a protective film;

[0071] b. After mixing the following ingredients with the material prepared in step a, dry pretreatment;

[0072]

[0073] Then pour the passivation s...

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Abstract

The invention discloses a preparation method of a high-efficiency composite molten iron desulfurizer, belonging to the technical field of iron and steel metallurgical auxiliary materials. The steps are: (1) batching; (2) preparation process: a. Passivate the above-mentioned zinc chloride, the process is as follows: spraying: spray the additive on the surface of the zinc chloride powder in the container; Keep warm at 100-1050°C for 4 minutes to boil the additive and completely volatilize it to be absorbed by cooked zinc chloride to form a protective film; b. After mixing the ingredients with the material prepared in step a, dry and pre-treat; The passivation solution is poured into the above materials, stirred, naturally cooled and ground to make a powdered product; (3) Put it in a moisture-proof container or bag and seal it for use. It can achieve high efficiency and energy saving of hot metal desulfurization without increasing the overall cost of hot metal desulfurization. After desulfurization, the sulfur content of hot metal can reach <0.010%, and the desulfurization time is only 50% of the traditional desulfurization time.

Description

technical field [0001] The invention belongs to the technical field of iron and steel metallurgical auxiliary materials, and more specifically relates to a preparation method of a high-efficiency composite molten iron desulfurizer. Background technique [0002] Sulfur in steel has adverse effects on the properties of steel, reducing the plasticity and toughness of steel, and reducing the surface and microstructure of steel. The steel required by modern industry requires that the sulfur content should be <0.015%. In order to reduce the sulfur content in steel and improve the quality level of steel. The desulfurization technology of hot metal treatment outside the furnace has become an indispensable link in the steelmaking process. [0003] Hot metal desulfurizers are divided into four categories: lime, calcium carbide, soda, and magnesium. Some other substances, such as rare earth element cerium, have a strong affinity with sulfur, but their desulfurization ability is l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21C1/02C21C7/064
Inventor 李大志
Owner WUHU JINLONG MOLD FORGING
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