Cement plant dust recovery system

Details Cement plant dust recovery system Cement plant dust recovery system

1984-08-27

1986-04-22

Dixon, Jr., William R.

Compositions: coating or plastic

Coating or plastic compositions

Proteinaceous material containing

106103, C04B 736

Patent

active

045840229

ABSTRACT:
A process of treating the dust catch from a cement manufacturing operation to produce either cement clinker or an intermediate product suitable for feed to a conventional cement clinker production facility. A biproduct of enriched alkali and sulfur compounds is also produced. The process includes a feed preparation stage where dust catch, coal or coke and a binder such as cement are combined. Additives to correct the material chemistry may also be added. This mixture is formed into nodules which are dried and then sized to form a feed material. The feed material is processed at or near cement clinkering temperatures in a fluidized bed reactor to volatilize alkali and sulfur compounds and products the intermediate product or cement clinker. Suitable heat recovery devices are utilized in the product cooling phase.

REFERENCES:
patent: 2477262 (1949-07-01), Mooser
patent: 2687290 (1954-08-01), Garoutte et al.
patent: 3622363 (1971-11-01), Van Dornick
patent: 3870534 (1975-03-01), Van Dornick
patent: 4173487 (1979-11-01), Cohen
patent: 4249952 (1981-02-01), Davis, Jr. et al.
patent: 4329180 (1982-05-01), Herchenbach et al.
patent: 4367095 (1983-01-01), Namy

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