发明名称 |
METHOD OF GRANULATED PLASTER OBTAINMENT |
摘要 |
FIELD: construction. ^ SUBSTANCE: method of granulated plaster obtainment out of sour waste of hydrofluoride production involves waste neutralisation by lime-containing agent, performed simultaneously with granulation. Lime-containing agent is added in amount required by stoichiometric ratio or exceeding stoichiometric amount not more than by 5.0 wt %, and water is supplied at the same time in amount of 13.0-15.0 wt % of granulated product weight. The process is implemented in granulating drum at 10-20 rpm drum rotation rate for one hour to obtain at least 90-95% of granules of 20-50 mm size and the rest of 5-20 mm granules, with unbound sulfuric acid content of 0.02-0.05 wt %. ^ EFFECT: improved method of granulated plaster obtainment. ^ 1 tbl |
申请公布号 |
RU2367629(C2) |
申请公布日期 |
2009.09.20 |
申请号 |
RU20070127140 |
申请日期 |
2007.07.16 |
申请人 |
GOSUDARSTVENNOE OBRAZOVATEL'NOE UCHREZHDENIE VYSSHEGO PROFESSIONAL'NOGO OBRAZOVANIJA "URAL'SKIJ GOSUDARSTVENNYJ TEKHNICHESKIJ UNIVERSITET - UPI IMENIPERVOGO PREZIDENTA ROSSII B.N.EL'TSINA" (UGTU-UPI) |
发明人 |
PURESKINA OL'GA ANATOL'EVNA;GASHKOVA VALENTINA IVANOVNA;KATYSHEV SERGEJ FILIPPOVICH;TIMOKHIN VALERIJ EVGEN'EVICH;ZAGUDAEV ADOL'F MAKAROVICH;KHOMJAKOVA NADEZHDA VLADIMIROVNA |
分类号 |
C01F11/46;C04B11/06 |
主分类号 |
C01F11/46 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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