本文選題：脫硅磷石膏　切入點(diǎn)：硫酸銨　出處：《化工礦物與加工》2017年06期

【摘要】：利用脫硅磷石膏、碳酸氫銨和氨水為原料,制備硫酸銨和碳酸鈣,通過正交試驗(yàn)設(shè)計(jì)和單因素試驗(yàn),探索最佳工藝條件。結(jié)果表明適宜的工藝條件為:反應(yīng)溫度50℃,反應(yīng)時(shí)間2h,物料比1.11,液固比2.2,攪拌速度200r/min。此時(shí)硫的轉(zhuǎn)化率為99.66%,硫的回收率為97.89%,氮的回收率為89.47%,綜合回收率為93.68%,碳酸鈣的過濾強(qiáng)度為653.79kg/m~2·h。硫酸銨產(chǎn)品質(zhì)量達(dá)到了國(guó)家標(biāo)準(zhǔn)一等品的要求,碳酸鈣產(chǎn)品中CaCO_3質(zhì)量分?jǐn)?shù)達(dá)到了97.74%,實(shí)現(xiàn)了磷石膏的高效利用。
[Abstract]:Ammonium sulfate and calcium carbonate were prepared by using desilication phosphogypsum, ammonium bicarbonate and ammonia as raw materials. The optimum technological conditions were explored by orthogonal design and single factor test.The results showed that the optimum conditions were as follows: reaction temperature 50 鈩，

本文編號(hào)：1710707