Foundry molding sand containing blast furnace slag

A blast furnace slag and casting mold technology, applied in the fields of foundry and sand casting, can solve the problems of coal powder clay green sand not meeting the needs of the scientific development of the foundry industry, environmental protection policies, toxic gas pollution, serious emissions, etc. The effect of saving resources and excellent quality

Inactive Publication Date: 2014-02-05
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

Method used

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Embodiment Construction

[0013] A foundry sand containing blast furnace slag, which is composed of the following components in parts by weight: 40-55 parts of mudstone particles, 3-5 parts of waste aluminum powder, 7-9 parts of graphite powder, 6-8 parts of bentonite, plant ash 2-5 parts, 4-6 parts of granular blast furnace slag, and 8-12 parts of water. The specific preparation method is: 1) weigh plant ash, granular blast furnace slag, and bentonite according to the proportion, add 35-40% of the total amount of water, and soak for 5 -7 hours and keep the temperature at 120-150°C to obtain slurry; 2) Weigh the mudstone particles, waste aluminum powder, and graphite powder according to the proportion, put them into the sand mixer for dry mixing, and mix for 1.5-2 hours; 3) Then add the slurry in step 1) and the remaining water into the sand mixer, mix for 2-4 hours, and produce sand, the granular blast furnace slag has a particle size of 80-100 mesh.

[0014] The process performance of foundry sand co...

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Abstract

The invention discloses foundry molding sand containing blast furnace slag. The foundry molding sand is prepared from the raw materials in parts by weight: 40-55 parts of mudstone particle, 3-5 parts of waste aluminum powder, 7-9 parts of graphite powder, 6-8 parts of bentonite, 2-5 parts of plant ash, 4-6 parts of granular blast furnace slag and 8-12 parts of water. The foundry molding sand is prepared by the steps: 1) weighing the plant ash, the granular blast furnace slag and the bentonite according to the proportion, and adding water accounting for the total quantity of 35-40 percent. With the adoption of the foundry molding sand, as coal powder is not added, and straw powder and the plant ash are mainly used as antisticking additives, the cost is lowered, and the surface smoothness of a casting is also improved.

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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Application Information

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IPC IPC(8): B22C1/00B22C1/14
Inventor 黄俞丰
Owner 黄俞丰
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