| you are: special purpose Pottery
From faience mainly a moulding method produce toilet bowls, washstands, smyvnye tanks, etc. For manufacture of large products (baths, sinks and so forth) use shamotnyj faience into which instead of quartz enter shamot (10-15%). Water absorption at faience of 10-12%, strength at compression - usually to 100 MPa. A surface of faience products cover with glaze that gives them water resistance. пояснично-крестцовый остеохондроз
In comparison with faience semiporcelain has more caked crock (water absorption of 3-5%) and its durability above.
Porcelain differs still bolshej in density (water absorption of 0,2-0,5%) and durability (to 500 MPa) that allows to produce from it thin-walled products.
To kislotoupornym to pottery carry: 1) kislotoupornyj brick Рњ150-250, kislotostojkostju not less than 92-96%, water absorption no more than 8-12%, thermal stability not less than 2 teplosmen; 2) tiles kislotoupornye and termokislotoupornye Рњ300, kislotostojkostju 96-98%, water absorption no more than 6-9%, temperature constancy not less than 2-8 teplosmen; 3) pipes and shaped parts to them Рњ300-400, kislotostojkostju not below 97 98%, water absorption no more than 3-5%.
Kislotoupornye of a product produce from glin, not containing impurity lowering chemical firmness (carbonates, plaster, sulfuric kolchedan, etc.) and conglomerating at temperature nearby 1200°С.
Kislotostojkost of products characterises their insolubility in acids (except for HF) and alkalis. Kislotoupornye a brick and tiles serve for futerovki towers and tanks on chemical plants, and also furnaces for roasting sulfuric kolchedana, for the device of floors in shops with excited environments etc. Ceramic kislotoupornye pipes apply to swapping of inorganic and organic acids and gases at depression or pressure to 0,3 MPa.
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