Compositions: coating or plastic – Coating or plastic compositions – Proteinaceous material containing
Patent
1978-04-14
1979-11-20
Veritz, O. R.
Compositions: coating or plastic
Coating or plastic compositions
Proteinaceous material containing
C04B 714, C04B 702
Patent
active
041749740
ABSTRACT:
Disclosed is a manufacturing process for converting coal ash slag from a slagging coal gasifier into a marketable cement product having the characteristics and qualities of portland cement. This process comprises the steps of transferring molten slag from a slagging coal gasifier to a melt chamber and reacting it with a mineral containing lime, for example: calcium oxide, calcium hydroxide or calcium carbonate, to form a homogeneous cement product. This cement product is then transferred to a quench chamber where it is allowed to cool and solidify in the form of clinkers, which are later reduced to powder form.
This process also provides an efficient means to conserve energy when producing a portland cement and provides an effective and economical way to dispose of a waste product while increasing the cost efficiency of a slagging coal gasifier.
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patent: 1731189 (1929-10-01), Bergquist
patent: 2745657 (1956-05-01), Oster
patent: 3759730 (1973-09-01), Trief
Bell Mark
Connelly Thomas J.
Gilkes Arthur G.
McClain William T.
Standard Oil Company (Indiana)
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