| 摘要 |
<p>The invention provides a method of producing a product containing calcium sulfate hemihydrate and polynucleate basic metal hydroxysulfate complex in solid form which provides a positively charged polynucleate complex possessing charge neutralizing properties in systems containing suspended or colloidal negatively charged particles when dissolved in water. The method comprises mixing a molten aluminum or iron III sulfate and a calcium compound taken from the group consisting of Ca(OH)2, CaO, CaCO3 and CaMg(CO3)2. After cooling, a product is formed containing polymetal hydroxysulfate complex and calcium sulfate hemihydrate.</p> |
