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Novel slag melting agent, preparation method and application of novel slag melting agent in preparation of high-purity hypereutectic niobium-chromium-containing 28 cast iron

A slag agent and a new type of technology are applied in the application field of preparing high-purity hypereutectic niobium-chromium-containing 28 cast iron, which can solve the problems of poor effect of reducing oxygen and hydrogen content, and achieve improved fluidity, strong adsorption force and cationic Exchangeability, the effect of increasing the Rockwell hardness value

Pending Publication Date: 2022-05-17
广西长城机械股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the slag agent prepared by the prior art has the problem that the effect of reducing oxygen and hydrogen content is relatively poor, so how to improve the new slag agent to reduce oxygen, hydrogen, etc. The effect of hydrogen content, and then improve the new energy of chromium 28 cast iron products, is the direction of the present invention's research

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0034] The preparation method of described novel slag agent, comprises the following steps:

[0035] 1) In parts by weight, add perlite powder, aluminum powder, montmorillonite powder, fluorspar powder, talc powder, passivated lime powder, magnesium carbonate powder, medical stone powder, and quartz powder into the mixer, at a temperature of 45-50 °C, stirring at a speed of 200-300r / min for 0.8-1.2h to prepare slurry a;

[0036] 2) Add squash gum and water to the slurry a prepared in step 1), and stir for 0.4-0.6h at a temperature of 42-46°C and a rotation speed of 200-300r / min to prepare slurry b;

[0037] 3) adding the slurry b prepared in step 2) into the mould, and forming particles with a particle size of 1-1.5 cm after vacuum suction filtration;

[0038] 4) Send the granules prepared in step 3) into an oven, and dry at 92-95° C. for 7-8 hours to prepare a new type of slag agent.

[0039] The principle and characteristics of the new slag agent composition of the present...

Embodiment 1

[0051] A new type of slag agent, in parts by weight, comprising the following raw materials: 10 parts of perlite powder, 3 parts of aluminum powder, 15 parts of montmorillonite powder, 3 parts of fluorspar powder, 11 parts of talcum powder, 4 parts of passivated lime powder , 6 parts of magnesium carbonate powder, 5 parts of medical stone powder, 2 parts of quartz powder, 3 parts of kale gum, 20 parts of water;

[0052] The particle size of described perlite powder is 800 orders;

[0053] The particle size of the aluminum powder is 900 mesh;

[0054] The quality index of described montmorillonite powder is: SiO 2 : 68.97%, the particle size is 900 mesh;

[0055] The quality index of described fluorspar powder is: CaF 2 : 75.86%, particle size is 800 mesh;

[0056] The quality index of described talcum powder is: SiO 2 : 61.05%, the particle size is 900 mesh;

[0057] The quality index of the passivated lime raw material is: CaO: 94.12%; S: 0.04%;

[0058] The particle s...

Embodiment 2

[0069] A new type of slag agent, in parts by weight, comprising the following raw materials: 9 parts of perlite powder, 3 parts of aluminum powder, 15 parts of montmorillonite powder, 4 parts of fluorspar powder, 12 parts of talcum powder, 5 parts of passivated lime powder , 7 parts of magnesium carbonate powder, 5 parts of medical stone powder, 3 parts of quartz powder, 3.4 parts of kale gum, 21 parts of water;

[0070] The particle size of described perlite powder is 900 orders;

[0071] The particle size of the aluminum powder is 1000 mesh;

[0072] The quality index of described montmorillonite powder is: SiO 2 : 69.13%, the particle size is 900 mesh;

[0073] The quality index of described fluorspar powder is: CaF 2 : 77.32%, particle size is 900 mesh;

[0074] The quality index of described talcum powder is: SiO 2 : 62.03%, the particle size is 900 mesh;

[0075] The quality index of the passivated lime raw material is: CaO: 93.62%; S: 0.03%;

[0076] The particle...

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Abstract

The invention discloses a novel slag melting agent, a preparation method of the novel slag melting agent and application of the novel slag melting agent to preparation of high-purity hypereutectic niobium-chromium-containing 28 cast iron. Comprising the following raw materials: 9-13 parts of perlite powder, 3-5 parts of aluminum powder, 14-18 parts of montmorillonite powder, 3-6 parts of fluorite powder, 10-16 parts of talcum powder, 4-8 parts of passivated lime powder, 6-10 parts of magnesium carbonate powder, 4-7 parts of medical stone powder, 2-5 parts of quartz powder, 2.6-4.8 parts of sesbania gum and 18-25 parts of water. According to the high-purity hypereutectic niobium-chromium-containing 28 cast iron prepared through the technology, the oxygen content is 10.8 ppm, the hydrogen content is 3.1 ppm, the Rockwell hardness value (HRC) is 64.1, the high-purity hypereutectic niobium-chromium-containing 28 cast iron can be used for overflowing part pump bodies, impellers, various powder conveying pipelines, liners and the like of small pumps (8 inches), and the use effect is good.

Description

technical field [0001] The invention belongs to the technical field of slag agent preparation and application thereof, and in particular relates to a novel slag agent, a preparation method and its application in the preparation of high-purity hypereutectic niobium-chromium-containing 28 cast iron. Background technique [0002] Chromium series cast iron is formed according to the content of chromium, including chromium 28 cast iron, which is one of the most widely used wear-resistant materials at home and abroad. Chromium 28 cast iron conventionally produced by the prior art is to adjust composition to improve properties such as hardness, which will correspondingly increase production cost. Although the addition of alloying elements can improve the mechanical properties of low-chromium cast iron, however, if the content of alloying elements is too high, the requirements for smelting and heat treatment processes will also increase accordingly, increasing the difficulty of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C7/076C22C33/08
CPCC21C7/076C22C33/08Y02P10/20
Inventor 周正赵四勇田辉
Owner 广西长城机械股份有限公司
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