Method for production of portland clinker
OwnerPavel P. Lerke, Stanislav V. Terekhovich +4inventors
InventorsPavel P. Lerke, Stanislav V. Terekhovich, Bakhyt D. Aldiyarov, Valery V. Shnaider, Pavel B. Kurnikov, Pavel B. Kurnikov
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Abstract
A method for producing portland clinker which includes the steps of calcining a mixture of raw materials, at 1,350.degree.-1.450.degree. C. in a reducing gaseous medium containing more than 80 mass % of carbon monoxide, said mixture containing 59.7-65.05 mass % of limestone, 32.83-39.07 mass % of phosphoric slag and 1.07-6.21 mass % of additional materials containing not less than 40 mass % of iron oxide. The calcined product is then subjected to forced cooling.
Claims1
A method for producing portland clinker comprising:
- preparing a mixture of raw materials comprising 59.7-65.05 weight % of limestone, 39.07-32.83 weight % of phosphoric slag and 1.07-6.21 weight % of a material containing not less than 40 weight % of iron oxide;
- calcining said mixture at 1,350-1,450.degree. C. in a gaseous medium containing more than 80 weight % of carbon monoxide to thereby fix the calcium oxide into minerals of portland clinker;
- and
- force cooling the resulting portland clinker.
Dependencies are inferred from the claim text.