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High-performance slag collecting agent

A slag collector, high-performance technology, applied in the field of molding sand production, can solve the problems of perlite trapping, flowing into the cavity, prolonging the time, etc., and achieve the effect of good heat resistance and heat preservation, reducing the loss of molten iron, and reducing the iron loss.

Inactive Publication Date: 2016-09-07
HEFEI CITY TENVER PRECISION CASTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the time is prolonged, the moisture in the free particles will expand violently, resulting in bouncing phenomenon, and it will easily flow into the cavity with molten iron during pouring
The production of ductile iron parts mostly adopts an open pouring system, so castings are prone to produce perlite defects

Method used

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Embodiment Construction

[0020] A high-performance slag collecting agent, made of the following components in parts by weight, clay 7, modified perlite 42, straw ash 8, forsterite powder 5, pottery clay powder 5, zeolite powder 3, sepiolite powder 6, mo Stone powder 2, hollow glass microsphere powder 6, pyrophyllite powder 3, palygorskite powder 3;

[0021] The modified perlite is made of the following components in parts by weight: perlite 45, sodium lauryl sulfate 0.6, sodium citrate 1.1, sorbitol 2, ethyl silicate 1, glycerol 1, amyl Diacid 0.8, sodium silicate 1; its preparation method is: ① Mix sorbitol and ethyl silicate evenly, heat in a water bath, control the temperature to 35°C, and keep for 5 minutes; ② Mix perlite, citric acid Mix sodium and glycerol evenly together, heat to 65°C, keep warm for 10 minutes, and cool to room temperature to obtain mixture 1; ③ Mix glutaric acid, sodium silicate, sorbitol and ethyl silicate in ① evenly Mix together, heat to 52°C, and after 10 minutes, cool to...

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Abstract

The invention discloses a high-performance slag collecting agent which is prepared from the following components: clay, modified perlite, straw ash, forsterite powder, pottery clay powder, zeolite powder, sepiolite powder, mullite powder, hollow glass microsphere powder, pyrophillite powder and palygorskite powder. The slag collecting agent provided by the invention resists high temperature, has favorable heat-resistance and thermal-insulation effects, keeps a nodulizing process stable, has high slag removal efficiency and does not affect the components of molten iron; iron slag is fragile after being cooled, so that the iron slag is convenient to recover and the loss of the molten iron is can be reduced; and the slag collecting agent can change the form of desulfurized slag to reduce the slag content of the molten iron entering a converter and the phenomenon of molten iron resulfurization, the loss of iron is reduced by an average of 48%, and on average, the desulfurized molten iron contains about 0.061% of sulfur.

Description

technical field [0001] The invention relates to the field of molding sand production, in particular to a high-performance slag collector. Background technique [0002] Ductile cast iron is a high-strength cast iron material developed in the 1950s. Its comprehensive performance is close to that of steel. It is based on its excellent performance that it has been successfully used to cast some complex stress, strength, toughness, and wear resistance. Parts with high performance requirements. Spheroidal graphite is obtained through spheroidization and inoculation treatment in the production process, which effectively improves the mechanical properties of cast iron, and at the same time improves plasticity and toughness. However, the source of raw materials contains a large amount of sulfur, which affects the spheroidization process of graphite during production. Directly using a slag rake for slag removal will not only affect the quality of the obtained ductile iron, but also p...

Claims

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Application Information

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IPC IPC(8): C21C1/10C21C7/064C21C7/076
CPCC21C1/10C21C7/0037C21C7/0087C21C7/0645Y02P10/20
Inventor 孙爱琴
Owner HEFEI CITY TENVER PRECISION CASTING
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