Process for producing hardened materials from combustion ash of

Details Process for producing hardened materials from combustion ash of Process for producing hardened materials from combustion ash of

1988-06-24

1992-03-31

Lewis, Michael

Compositions: coating or plastic

Coating or plastic compositions

Inorganic settable ingredient containing

106707, 106710, 106DIG1, C04B 1808, C04B 1806, C04B 726, C04B 204

Patent

active

051004739

ABSTRACT:
The present invention relates to processes for producing a material usable as a suitable civil engineering and construction material by treating a combustion ash formed by the combustion of a fluidized bed comprising a coal as the fuel and limestone as a desulfurizing agent. In this process, quick lime contained therein is sufficiently slaked at first by addition of water and heat thus generated is released to prevent disintegration of the product, and then the product is subjected to atmospheric pressure steam treatment to obtain a product of high strength in a short time.

REFERENCES:
patent: 2833659 (1958-05-01), Bauer
patent: 4353749 (1982-10-01), Ray et al.
patent: 4603037 (1986-07-01), Yoon
patent: 4659385 (1987-04-01), Costopoulos et al.
patent: 4756761 (1988-07-01), Philip et al.
patent: 4770831 (1988-09-01), Walker
patent: 4804147 (1989-02-01), Hooper

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