Magnesium ore tailing-containing casting molding sand
A technology of magnesium ore and casting mold, applied in the field of sand casting and foundry, can solve the problems of coal powder clay green sand not meeting the needs of scientific development of the foundry industry, environmental protection policies, toxic gas pollution, large consumption, etc., and achieve low cost. , saving resources, excellent quality effect
Inactive Publication Date: 2014-01-29
黄俞丰
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Problems solved by technology
Coal powder clay green sand, which is widely used at home and abroad, is generally made of raw sand, binders, coal powder additives, etc. and water. It has a certain anti-sticking sand effect, low material cost, and high production efficiency. However, its consumption is large, the emission is serious, and the coal powder is burned and decomposed in the casting process to produce toxic gas pollution.
[0003] It can be seen from the above that coal powder clay green sand is no longer suitable for the needs of the scientific development of the foundry industry and the current environmental protection policy of reducing consumption and emission
Method used
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Embodiment Construction
[0013] A foundry sand containing magnesium ore tailings, which consists of the following components in parts by weight: 40-55 parts of quartz particles, 3-5 parts of lignocellulose, 7-9 parts of diatomite, and 6 parts of sodium bentonite -8 parts, 2-5 parts of redispersible latex powder, 4-6 parts of powdery magnesium ore tailings, 8-12 parts of water, the specific preparation method is, 1) weigh powdery magnesium ore tailings, Redispersible latex powder, sodium bentonite, add 35-40% water in total, soak for 3-4 hours and keep the temperature at 100-150°C to obtain slurry; 2) Weigh quartz particles and wood fiber according to the proportion Put element and diatomaceous earth together into the sand mixer for dry mixing, and mix for 2-3 hours; 3) add the slurry in step 1) and the remaining water into the sand mixer, and mix for 2-4 hours, and the sand.
[0014] The technological performance of the foundry sand containing magnesium ore tailings by the present invention is:
[0...
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Abstract
The invention discloses magnesium ore tailing-containing casting molding sand. The magnesium ore tailing-containing casting molding sand comprises the following components in parts by weight: 40-55 parts of quartz particles, 3-5 parts of lignocellulose, 7-9 parts of diatomite, 6-8 parts of sodium bentonite, 2-5 parts of re-dispersibility latex powder, 4-6 parts of powdery magnesium ore tailings and 8-12 parts of water. A preparation method of the magnesium ore tailing-containing casting molding sand comprises the following steps: (1) weighting the powdery magnesium ore tailings, the re-dispersibility latex powder and the sodium bentonite in proportion, adding the water accounting for 35-40% of the total quantity, soaking for 3-4 hours, and maintaining the temperature at 100-150 DEG C. No pulverized coal is added to the magnesium ore tailing-containing casting molding sand, and straw powder and plant ash are mainly used as anti-sticking additives so as to reduce the cost and improve the surface smoothness of castings.
Description
technical field [0001] The invention relates to the field of casting, in particular to the field of sand casting. Background technique [0002] At present, the castings produced by sand casting account for 80% of the total castings. The molding material of sand casting plays an important role in casting production, which directly affects the energy consumption, environmental pollution, and casting quality, production efficiency and cost of casting production. Coal powder clay green sand, which is widely used at home and abroad, is generally made of raw sand, binders, coal powder additives, etc. and water. It has a certain anti-sticking sand effect, low material cost, and high production efficiency. However, its consumption is large, the emission is serious, and the coal powder is burned and decomposed in the casting process to produce toxic gas pollution. [0003] It can be seen from the above that coal powder clay green sand has not met the needs of the scientific develop...
Claims
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Inventor 黄俞丰
Owner 黄俞丰