| 发明名称 |
RÜCKGEWINNUNG VON GIPSMATERIALIEN |
| 摘要 |
<p>A method of reclaiming gypsum materials. The method comprising heating the used material to a temperature between 220 and 240 DEG C to form soluble anhydrite. Quenching the anhydrite and retaining in an aqueous solution until dihydrate is formed. Where the material is plaster of paris, the dihydrate is subsequently heated to form the hemihydrate.</p> |
| 申请公布号 |
DE69803309(T2) |
申请公布日期 |
2002.10.02 |
| 申请号 |
DE1998603309T |
申请日期 |
1998.09.04 |
| 申请人 |
CASO LTD., HARROGATE |
发明人 |
O'BRIEN, GRAHAM;SCHOFIELD, MARTIN |
| 分类号 |
C04B11/26;C04B18/16;(IPC1-7):C04B11/02 |
主分类号 |
C04B11/26 |
| 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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