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Preparation method of modified sodium silicate-bonded sand

A technology of glass sand and modified water, which is applied in the direction of manufacturing tools, casting molding equipment, metal processing equipment, etc., can solve the problems of low strength of water glass sand, easy cracks, and difficult cleaning of falling sand, so as to reduce the labor intensity of cleaning , save cleaning costs, and improve the strength of the sand mold

Inactive Publication Date: 2018-02-09
JIANGSU MINJIANG MINING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, there are several types of foundry sand, such as clay sand, water glass sand, resin sand, etc. Among them, water glass sand has the characteristics of easy compaction, good fluidity, non-toxic and tasteless, so it is a sand mold commonly used in cast steel production, but water glass The sand has the disadvantages of low strength, easy cracks, and difficult sand cleaning.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A preparation method of modified water glass sand, wherein the modified water glass sand is composed of the following raw materials in parts by weight: 35 parts of quartz sand, 10 parts of water glass, 6 parts of clay, 12 parts of gypsum, and 3 parts of fluorinated graphite powder , 5 parts of nano-calcium carbonate, 3 parts of reinforcing agent, 3 parts of disintegrating agent, 12 parts of resin powder, 3 parts of sodium tripolyphosphate, 5 parts of active silicon micropowder and concentration are 20 parts of sodium polyacrylate solution of 25%; Described preparation The method includes the following steps:

[0015] (1) The quartz sand in the formula is subjected to magnetic separation at 300-400mT, and then the quartz sand of 0.2-0.4mm is screened out by screening equipment;

[0016] (2) immerse the quartz sand of step (1) into the sodium polyacrylate solution with a concentration of 25% and stir for more than 1 hour, and remove the solution by filtration;

[0017] (...

Embodiment 2

[0020] A preparation method of modified water glass sand, wherein the modified water glass sand is composed of the following raw materials in parts by weight: 55 parts of quartz sand, 20 parts of water glass, 12 parts of clay, 30 parts of gypsum, and 8 parts of fluorinated graphite powder , 15 parts of nano calcium carbonate, 8 parts of reinforcing agent, 8 parts of disintegrating agent, 20 parts of resin powder, 8 parts of sodium tripolyphosphate, 12 parts of active silicon micropowder and concentration are 30 parts of sodium polyacrylate solution of 25%; The method includes the following steps:

[0021] (1) The quartz sand in the formula is subjected to magnetic separation at 300-400mT, and then the quartz sand of 0.2-0.4mm is screened out by screening equipment;

[0022] (2) immerse the quartz sand of step (1) into the sodium polyacrylate solution with a concentration of 25% and stir for more than 1 hour, and remove the solution by filtration;

[0023] (3) Calcining the qu...

Embodiment 3

[0026] A preparation method of modified water glass sand, wherein the modified water glass sand is composed of the following raw materials in parts by weight: 45 parts of quartz sand, 15 parts of water glass, 9 parts of clay, 20 parts of gypsum, and 5 parts of fluorinated graphite powder , 10 parts of nano-calcium carbonate, 5.5 parts of reinforcing agent, 5.5 parts of dispersing agent, 16 parts of resin powder, 5 parts of sodium tripolyphosphate, 8 parts of active silicon micropowder and concentration are 25 parts of sodium polyacrylate solution of 25%; The method includes the following steps:

[0027] (1) The quartz sand in the formula is subjected to magnetic separation at 300-400mT, and then the quartz sand of 0.2-0.4mm is screened out by screening equipment;

[0028] (2) immerse the quartz sand of step (1) into the sodium polyacrylate solution with a concentration of 25% and stir for more than 1 hour, and remove the solution by filtration;

[0029] (3) Calcining the quar...

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Abstract

The invention discloses a preparation method of modified sodium silicate-bonded sand. The modified sodium silicate-bonded sand consists of the following raw materials including, by weight, 35-55 partsof quartz sand, 10-20 parts of sodium silicate, 6-12 parts of clay, 12-30 parts of gypsum, 3-8 parts of carbon monofluoride powder, 5-15 parts of nano calcium carbonate, 3-8 parts of a reinforcing agent, 3-8 parts of a collapsibility agent, 12-20 parts of resin powder, 3-8 parts of sodium tripolyphosphate, 5-12 parts of active silica powder and 20-30 parts of a sodium polyacrylate solution with the concentration being 25%. According to the preparation method, the active silica powder, the nano calcium carbonate and the carbon monofluoride powder are added into the common sodium silicate, andthe sodium polyacrylate solution with the concentration being 25% is used for replacing the water in the original sodium silicate, so that the sand mould strength is improved, the sand mould collapsibility is improved, the cleaning labor intensity is lightened and the cleaning expense is saved under the condition of increasing small cost.

Description

technical field [0001] The invention relates to the technical field of mining production, in particular to a preparation method of modified water glass sand. Background technique [0002] At present, there are several types of casting sand, such as clay sand, water glass sand, resin sand, etc. Among them, water glass sand has the characteristics of easy compaction, good fluidity, non-toxic and tasteless, so it is a sand mold commonly used in cast steel production, but water glass Sand has the disadvantages of low strength, easy cracks, and difficult sand cleaning. Contents of the invention [0003] The object of the invention is to provide a kind of preparation method of modified water glass sand for the defect and deficiency of prior art, to solve the problem proposed in the background technology. [0004] In order to achieve the above object, the technical solution adopted in the present invention is: a preparation method of modified water glass sand, and its innovative...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C1/02
CPCB22C1/02
Inventor 施路明
Owner JIANGSU MINJIANG MINING CO LTD
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