Powder molding additive and application thereof in preparing various shaping products

Abstract

The powder molding additive belongs to a compound additive mainly composed of inorganic substances. It is composed of dimensioning agent 1-99% (weight), forming agent (1-99% (weight) and reinforcing agent, tackifier, toughening agent, and combustion agent. The present invention can be used for carbon-containing powder .Using carbon-containing substances to reduce substances, or mixing powders of the two, can also be used in fertilizers, chemicals, daily chemicals and other industries. It has no smoke caused by starch and has certain water resistance. No matter at low temperature or high temperature, the produced The products have the required strength and their cost is low.

Description

technical field [0001] The present invention belongs to crushed charcoal powder and other carbon-containing (others such as straw charcoal, branch charcoal, sawdust charcoal, coke, petroleum coke, coal, peat, etc.) powder (including lower corner products) or powder reduced with carbon (silicon oxide, sulfur Iron, copper, rare earth, tin, zinc, manganese and other ores or their oxides or metal powders, etc.), or the powder molding additives mixed with the two, and use the molding additives to manufacture molded products in the above fields and in chemical fertilizers. Disinfection Agents, chemical powders, camphor balls, powder metallurgy of magnetic materials, abrasives, bath salts and other fields to press powder into products. Background technique [0002] Generally speaking, the carbon-containing powders such as crushed charcoal powder, coke powder, petroleum coke powder, coal powder (including the above flying powder) or their mixed powder are pressed into shape, and the...

AI Technical Summary

Problems solved by technology

[0002] Generally speaking, the carbon-containing powders such as crushed charcoal powder, coke powder, petroleum coke powder, coal powder (including the above flying powder) or their mixed powder are pressed into shape, and they are pressed into shape by the following types of additives, 1) The additives used are made of starch or starch and other binders. See US Patent No. 5,573,555. This kind of binder is often used in charcoal powder or similar products based on it, because starch will cause choking when burning. Smoke is not suitable for indoor use, and at the same time has a bad impact on the human body and the environment. The strength after burning is not suitable for industrial use, and it is not easy to use on barbecues; 2) It is made of cellulose or compounded with other additives, See former East Germany patent DD296,304, cellulose is expensive, about 10,000 yuan per ton, and the strength after burning is not very good, so few people use it; 3) tar pitch or its compound with other additives, see International patent WO 02 25,496, tar pitch contains harmful substances to the human body, and tar pitch has a high melting point and is not easy to operate at room temperature. From the perspective of this world patent, the amount of additives is large, reaching 33%. Moreover, according to the book compiled by the Food and Agriculture Organization of the United Nations, tar pitch The charcoal formed by bituminous binder will be carbonized again, which is expensive and should not be popularized and used; 4) use earth products such as bentonite, see Chinese patent application 92101283.7, this type of additive pressed and formed product is not resistant to high temperature, and can only be used for washing charcoal for pot

Carbon for industrial reduction, such as the smelting of metals such as steel, silicon and silicide, and carbon disulfide can only be used in carbon blocks; civil charcoal, such as charcoal for barbecues, sometimes has to be reluctantly used because no better binder can be found. Starch-based binders are used for barbecues and shabu-shabu, and currently seldom use crushed charcoal to bind and press charcoal.