Process for preparing highly free flowing rock or table salt |
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| 申请号 | US3760941D | 申请日 | 1971-05-04 | 公开(公告)号 | US3760941A | 公开(公告)日 | 1973-09-25 |
| 申请人 | KALI & SALZ AG; | 发明人 | SINGEWALD A; FRICKE G; | ||||
| 摘要 | Process for preparing highly pure substantially free flowing rock or table salt from salt containing small amounts of anhydrite and kieserite which comprises admixing the rock salt with an anti-caking agent in the dry state, warming the mixture to a temperature of between 40*-120*C and subjecting the same to the action of high pressure electrostatic field. | ||||||
| 权利要求 | 2. Process according to claim 1 wherein said rock salt initially contains up to 2.8 percent anhydrite and up to 0.6 percent kieserite. 3. Process according to claim 1 which comprises warming the mixture to a temperature of from about 60* to 80*C. 4. Process according to claim 1 which comprises using said anti-caking agent in an amount of about 200 to 500 g/t. 5. Process according to claim 1 which comprises using said anti-caking agent in an amount of 250 g/t rock salt. 6. Process according to claim 1 wherein said sodium carbonate, magnesium stearate, calcium phosphate and magnesium oxide are used in powder form. 7. Process according to claim 1 wherein said mixture of anti-caking agent and rock salt is subjected to the action of an electrostatic field of 4 kV/cm using a single pass through said free-fall separator of 5 t/m.hr. 8. Process according to claim 1 wherein said said and anti-caking agent are mixed Together for a period of one-half minute. 9. Process according to claim 1, wherein said mixture of salt and anti-caking agent is heated for 15 minutes at 60*-80*C. |
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| 说明书全文 | |||||||
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