发明名称 |
Process for manufacturing phosphorous trichloride, phosphorous pentachloride and cement |
摘要 |
A process for manufacturing phosphorous trichloride, phosphorous pentachloride and cement comprising of heating at elevated temperature of 1100° C. to 1500° C. pulverized mixture of phosphate ores, carbonaceous substances, silica and/or alumina and treating the resultant gaseous products with chlorine in the ratio of 1 to 5 moles of chlorine per mole of phosphorous oxide contained in the phosphate ores while maintaining the temperature between 400° C. to 1000° C. by cooling and thereafter firstly separating gaseous mixture of primarily phosphorous trichloride and phosphorous pentachloride, from cement and later separating phosphorous trichloride and phosphorous pentachloride, both separations by known methods. |
申请公布号 |
US9199878(B2) |
申请公布日期 |
2015.12.01 |
申请号 |
US200913139254 |
申请日期 |
2009.12.11 |
申请人 |
|
发明人 |
Gharda Keki H. |
分类号 |
C01B25/10;C04B7/60;C01B25/01 |
主分类号 |
C01B25/10 |
代理机构 |
Kenealy Vaidya LLP |
代理人 |
Kenealy Vaidya LLP |
主权项 |
1. A process for manufacturing phosphorous trichloride, phosphorous pentachloride and cement comprising:
(i) heating at an elevated temperature of between 1100° C. to 1500° C. a pulverised mixture of phosphate ores containing calcium oxide, carbonaceous substances, silica and optionally alumina to produce gaseous products and cement, wherein the pulverised mixture has a ratio of calcium oxide to silica of 1.4 or above, (ii) treating the gaseous products with chlorine in a ratio of 1 to 5 moles of chlorine per mole of phosphorous oxide contained in the phosphate ores while maintaining the temperature between 400° C. to 1000° C. by cooling, and (iii) separating a gaseous mixture primarily including the phosphorous trichloride and the phosphorous pentachloride from the cement and thereafter (iv) separating the phosphorous trichloride and the phosphorous pentachloride. |
地址 |
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