How is brick of light qualitative clay produced?

Furnace of kiln of TOP fireproof material applies technical channel begin lecturing, what share to everybody today is the knowledge that passes brick of light qualitative clay.


Brick of light qualitative clay is the small qualitative refractory products of AL2O3 content 30%-46% , belong to firebrick of adiabatic heat preservation. Use clay grog or pledge argillaceous grog is mixed gently but model clay is main raw material, use combustible law production. Burden and water mix make but model pug or slop, with extrusion or pouring shape, dry hind in 1250 ℃ - in atmosphere of 1350 ℃ oxidation firing.
Make do not burn clay to pledge bricky raw material is fly ash sinks gently bead, float bead, horniness clay and soft qualitative clay, bond can choose colophony of water glass, vitriolic aluminium, phosphoric acid aluminium, tall aluminous cement, phenolic aldehyde, modified resin to reach its complex matter.
Brick of light qualitative clay can be made with a variety of methods, main production method has the following kinds. One, burn-up adds content way this is the method that produces light qualitative firebrick to be used extensively. Joining burn-up to add the destination of content is to reduce firebrick density. Often use have curium wooden layer, charcoal, coal fines and other organic matter. The water content of pug is fluctuant inside the limits in 25~35% , the pug that has mixed must pass tired stuff, shape in order to improve its function, use next but model law shapes, in goods firing in the process, the level that adds thing among them in burn-up (make an appointment with 500~1000 ℃ ) , must maintain strong oxidation atmosphere, in order to make sure burn-up joins the burn oneself out of content. Firing temperature is 1250~1300 ℃ . With this kind of method production bulk density is 1.0~1.3 to overcome ／ centimeter the brick of light qualitative clay of 3, with respect to goods fireproof spend and burn systole to look again, appropriate is used below in 1350~1400 ℃ .
2, when bubble law makes firebrick with this kind of method, the stoma in goods is by special join the bubble place in pug to form. Bubble is the main component of pug, it has conclusive effect to the property of goods, pug is mixed by clinker, clay curium wood chip is comprised; The attune that makes with the water of 25~30% becomes going from place to place thick liquid; Next the foam that rejoin has made in the machine that hit bubble, mix even, use this kind to be undertaken by the slop of bubble place saturation mould, along with matrix together dry, junior travel is firing. Bubble adds glue and Potassium by colophony black aqueous solution modulation of aluminous stabilizing agent and into. The preparation of colophony black is undertake colophony fusing first, use the processing of caustic soda solution of 10% next, continue to heat to be lost completely to colophony agglutinant till. After catharsis of saturated salt solution is being used after refrigeration, can reserve. Bubble stabilizing agent can use potassium aluminous solution, also can use water gum. The grog that 90~95% should contain in slop is pulverous, clay is 5~10% , because clay became much,the water in can increasing slop is divided, have adverse effect to goods (increase systole, be out of shape and crackle) . In the meantime, the grog of thick grain can play havoc with bubble and make slop statified, because this burden is medium,clinker should be the fine grained that does not exceed 1 millimeter. In the pug of mould, slop is 1:0 with bubble comparing.75~1.5 (compare) by bulk, adobe is firing temperature is 1250~1350 ℃ . Firing the goods after does not have correct over all dimension commonly, must try machining (if be on corundum emery wheel burnish) , ability gets proper external form and ask measure. This kind of brick can be used below the temperature of 1100~1300 ℃ .
3, chemical law is in this law, air hole forms the gas that the agent is generation of chemical reaction place. The gas of the generation after using dolomite and vitriolic function is when producing argillaceous brick, the slop in infuse model is accumulated in the action private parts of bleb increase. To secure the bulk that slop expects, can join half water gesso. 2 water gesso is formed after half water gesso is bibulous and caky, gesso should rise Gao Shining solid to end in makings of the slop in the model. Dry the goods after is in 1240~1300 ℃ is firing. Can live to use below 1100~1300 ℃ . 4, this law and burn-up add bubble grog way content law is similar, different is to use chemical law or equipment of bubble legal system first only light qualitative grog (unit weight 0.9~1.0) , make light simple product next with this grog. The quality of the adiabatic product that this kind of method makes is stabler. Poriferous grog should be comprised by the grain of 1.0~0.5 millimeter, thicker go against shape, and cross detailed rules to make product volume density lifts significantly. Argillaceous affiliation is measured depend on its in all plasticity and combinative sex, press weight plan) for 35~40%(commonly. Additional, the combinative sex to raise pug and shape quality, must join the waste liquid of sulphurous acid pulp of 1.5~2% . To reduce firebrick density, can join 2~10% curium wooden layer. This goods is in 1360~1410 ℃ is firing. In the production of light qualitative firebrick, it is main that bubble law and burn-up add content way: But the production that burn-up adds content way is more simple, and quality is good, have higher mechanical strength especially, facilitate carry. In the heat insulating materials that contacts with blaze to be being made, criterion bubble way is some more appropriate, quality is stabler.
The place on put together appeals to, TOP is above technology of application of furnace of fireproof material kiln is little make up the relevant content that arranges brick of light qualitative clay. The welcome pays close attention to channel of technology of fireproof material manufacturer.