Process for producing a calcia clinker

Details Process for producing a calcia clinker Process for producing a calcia clinker

1981-06-03

1982-12-28

McCarthy, Helen M.

Compositions: ceramic

Ceramic compositions

Refractory

501125, C04B 3502

Patent

active

043662579

ABSTRACT:
A calcia clinker having an excellent resistance to slaking and an enhanced modulus of rupture at elevated temperatures is produced by a process comprising the steps of: (1) calcining a lime material at a temperature of 800.degree. to 1300.degree. C. to prepare a calcia; (2) providing an admixture, in the form of fine particles having a specific surface area of 5000 cm.sup.2 /g or more, of the calcia with an additive comprising (A) 0.5 to 3%, in terms of oxide and based on the weight of CaO in the calcia, of at least one inorganic compound of an element selected from the group consisting of titanium, aluminum and silicon and (B) 0.5 to 2.0%, based on the weight of CaO in the calcia, of calcium fluoride; and sintering the above-mentioned compound (A), and; (3) sintering the admixture at a temperature of 1200.degree. to 1650.degree. C.

REFERENCES:
patent: 265073 (1882-01-01), Henderson
patent: 1614525 (1927-01-01), Hilbish
patent: 2076883 (1937-04-01), Ernould
patent: 2528471 (1946-12-01), Fisk
patent: 2678887 (1954-05-01), Hathaway
patent: 3026211 (1962-03-01), Cutler

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