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Application filed by Nikolaj A GrozevfiledCriticalNikolaj A Grozev
Priority to BG9483991ApriorityCriticalpatent/BG51038A3/en
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This method is used for purification of waste and drinking water in the pulp and paper industry, etc. It provides a waste-free process and saves on materials and power. Following the method, ground raw kaolin, containing up to 14% of moisture, is mixed and homogenized with concentrated (over 92%) sulphuric acid. Later the mixture is decomposed in a sealed reactor at a temperature between 200 and 250 degrees C and vacuum up to 0.01 MPa for 45 to 75 minutes.
BG9483991A1991-07-181991-07-18Method for aluminium sulphate production
BG51038A3
(en)
Technology for producing aluminosilicate floccocoagulant Gyandzha from waste products of the aluminium industry and its use in processes of treating highly turbid waters