CN1349868A - Polyslag heat-insulating covering agent with microporous structure - Google Patents

Abstract

The composition of slag-collecting heat-insulating covering agent with microporous structure comprises (wt%) zeolite 50-70%, scaled graphite 10-15%, guilin 901# 4-6% and pearlite 10-20%, its grain size is phi 5-8 mm, and granular material is less than 2%. Said invention is small in dosage of covering agent, can insulate heat and collect slag, and is good in light-proof property and free from fume pollution, it does not stick on the ladle, and can prolong the service life of ladle.

Description

Polyslag heat-insulating covering agent with microcellular structure

The invention belongs to the metallurgy auxiliary material.

At present, the producer that China's metallurgical casting industry has is still also using straw, reed ash as coverture, most of producer adopts silicate materials such as non-microcellular structure perlite, quartz, limestone as coverture, facts have proved that there are many deficiencies in above-mentioned coverture: addition is big, light-proofness is poor, contaminated environment, even influence material, therefore, the metallurgical casting industry is badly in need of the better novel coverture of effect.

The object of the present invention is to provide that a kind of consumption is few, heat insulation and preservation effect good, light-proofness is good, free of contamination polyslag heat-insulating covering agent with microcellular structure.

Technical scheme of the present invention is: a kind of polyslag heat-insulating covering agent with microcellular structure, it is characterized in that forming: zeolite 50%-70%, scale graphite 10-20%, Guilin 901#4-6%, perlite 10-20% by following material and ratio, its particle size diameter is the 5-8 millimeter, and powder is less than 2%.Its zeolite has the natural micropore structure.

Product of the present invention and existing product relatively owing to do not produce flue gas, do not produce pollution to environment; Because light-proofness is good, the operative employee do not produced the high light width of cloth penetrate and fire-cure; Because poly-slag excellent adsorption, do not need artificial pushing off the slag, not satchel, sticking bag, can allow prolong 3-4 doubly the service life of bag; Heat preservation and insulation is good, temperature drop＜4 degree/minute; Compare with the like product of import, its price has only 40% of import; Need not give heat, easy to use, and use amount is saved than existing coverture.

The invention will be further described below in conjunction with embodiment:

In the scope of said components, get zeolite 65%, scale graphite 15%, Guilin 901#5%, perlite 15%, totally 1000 kilograms, granulate respectively, making diameter is Φ 5-8mm, powder is less than 2%.Heat treatment is dried and is made water content＜0.4%.Its mesolite (clinoptilolite and modenite) is a natural shape aluminium silicate mineral.This crystalline solid with microporous structure is not only occupied by hydrone, but also is stopped up by other particle contamination in various degree, except that with the flat choosing in mine, also need carry out reverse flotation and handle when therefore producing.Above-mentioned batching fully mixed again being product of the present invention, as above-mentioned proportion scale is done suitably to adjust promptly to get series of products according to different trade mark molten steel (molten iron) by every bag of 1 kilogram of storehouse of packing into.As product of the present invention directly being added on 500 kilograms of intermediate frequency furnaces that steel (iron) water arranged, the operation of skimming of 0.3 kilogram/100 kilograms steel of addition (iron) water, the poly-slag of coverture becomes the shell cake, is easy to take off, pick out.Change in 500 kilograms of bull ladles as steel (iron) water, by 100 kilograms of steel (iron) water, evenly be sprinkled into 0.2 kilogram of coverture on steel (iron) water surface again, cover layer disperses automatically, and covers whole liquid levels, and the free from dust flue gas flies upward.Perusal: this product can adsorb ladle liquid level stream slag rapidly and safely and form a shell cake, and this shell cake is hard than pearl shell biscuit, and the shell cake never is connected with steel (iron) water bag bag wall, and the shell cake can descend and reduce along with steel, ladle liquid level.Along with steel in the bull ladle (iron) water flows out, liquid level reduces, and steel (iron) water bag diameter diminishes and the shell cake can shrink the thickening that diminishes automatically, and the shell cake is from start to finish from bag wall 10-20mm, never satchel or sticking bag.When steel (iron) water has watered, but coverture shell monoblock choose, take off out, bull ladle bag wall is smooth harmless, has prolonged electric furnace body and steel (iron) water bull ladle service life, has increased furnace life, bag age.

Claims (3)

1, a kind of polyslag heat-insulating covering agent with microcellular structure is characterized in that being made up of following material and ratio: zeolite 50%-70%, scale graphite 10-20%, Guilin 901#4-6%, perlite 10-20%;

2, the polyslag heat-insulating covering agent with microcellular structure according to claim 1 is characterized in that its particle size diameter is 5-8mm, and powder is less than 2%;

3, the polyslag heat-insulating covering agent with microcellular structure according to claim 1 is characterized in that its zeolite has the natural micropore structure.