化工进展2019，Vol.38Issue(3)：1190-1196,7.DOI:10.16085/j.issn.1000-6613.2018-1112
沸石法卤水/苦卤钾富集工艺
Process of potassium enrichment from brine/bittern using zeolite
摘要
Abstract
Thenewprocessofproducingpotassiumnitratewasinvestigated via ionexchangetechnology.In theprocess, sodiumnitratewasregardedaseluent, andtheprocessparametersofextractingpotassiumwere studied. The influence of eluent concentration and temperature on elution effect were explored. The results showedthathightemperatureandconcentrationoftheeluent (sodiumnitrate) werebeneficialforadsorption.When the raw material was brine and the temperature was 80℃ and the mass percent of sodium nitrate was46％, thepotassiumionconcentrationafterenrichmentincreasedfrom0.84 g/Lto15.95 g/L.Meanwhile, when the raw material was exchanged for bittern, high temperature was also beneficial for adsorption effect, the potassium ion concentration after enrichment increased from 8.93 g/L to 23.34 g/L under the same elution condition. It showed that the method was suitable for low potassium brine and high potassium bittern. The higher potassium concentration is, the higher saturated adsorption capacity and concentration of potassium can be obtained in the potassium-enrichment brine. This study provides the new way for potassium nitrate production industrialization in the future.关键词
沸石/卤水/离子交换/钾富集Key words
zeolite/brine/ion-exchange/potassium-enrichment分类
化学化工引用本文复制引用
赵颖颖,李丹,王军,王宗瑞,刘建路,袁俊生..沸石法卤水/苦卤钾富集工艺[J].化工进展,2019,38(3):1190-1196,7.基金项目
河北省科技计划(17273101D) （17273101D）
中国博士后基金面上项目(2017M611142) （2017M611142）
山东海化集团有限公司科技项目(SDHH-KJXM201701JSYFZX) （SDHH-KJXM201701JSYFZX）
