Wear-resisting brick has phosphate to fight abrasiveness, higher mechanical intensity and good thermal shock stability admirably. But more to the influence craft element of its function, the experiment studies the result makes clear:
1. Will be inside rotary kiln, the tall aluminium that controls to calcine via 1600 ℃ is aluminous, broken expect into high aluminous aluminous volume cent is 5-1mm, ＜ 1. 2mm, fine pink accumulates class of ≥3500cm2 ／ g3 than the surface. Its are mineral composition basically is α- - A1203 and a few Molaishi (3Al2O3 2Si02) .
2. Cementing agent uses industrial phosphoric acid (％ ) of H3PO4 chroma ≥85, industrial hydroted alumina and water are made up and become, its rub Er counts than: A12O3 ／ P2O5. =1: 3.2, join a quantity to be controlled in 7 one 9 ％ commonly, adscititious the saggar that 2 ％ control, in order to improve wear-resisting brick shape function. Increase the dry strength of phosphatic brick. Still can improve the performance that registers kiln skin inside firebrick of cement rotary kiln at the same time.
3. The tall aluminous aluminous raw material after to calcine is in broken the belt in grinding a process with pink was entered a few iron is qualitative, add phosphoric acid or agent of knot of phosphoric acid alumna gel, reaction is given off certain hydric make products expands, affected the packing of goods badly. Reason undertakes the head expects, yan makings time should be controlled control in 20~24 hour. Environmental temperature maintains in 15 ℃ above.
4. Via 300t attrition presses the adobe after bricky machine shapes, its are dry temperature control is controlled in 60 ℃ . Stoving time is in 48 hours of above are advisable.
5. Dry the adobe heat treatment after warms up system: 100 ℃ of room temperature ～ warm up speed is hour of ／ of 13 ℃ ／ ; 300 ℃ of 100 ～ warm up speed is hour of 40 ℃ ／ ; 500 ℃ of 300 ～ warm up speed is hour of ／ of 150 ℃ ／ ; ＞ of time of 500 ℃ constant temperature 15 hours, when dropping in temperature, make its natural cool.
Zhengzhou Rongcheng acts on the principle that bears the blame to the client, control the tall purity standard of magnesia raw material strictly, ensure magnesian carbon brick of production can be had good high temperature resistant function, the capability that fight broken bits is strong, can get used to a client the moving temperature of actual boiler, product quality was to get more of broad new old user mix reputably all the time support, welcome everybody the incoming telegram seeks advice and choose and buy, flourish Cheng Naicai will act on cordial attitude of attending to guests to the boiler that offers major is transformed and build program to you.
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