本文關(guān)鍵詞：青海西臺(tái)吉乃爾湖鹽田蒸發(fā)光鹵石礦的粒度分布及其礦物學(xué)特征　出處：《礦物巖石》2016年04期 　論文類型：期刊論文

  更多相關(guān)文章： 光鹵石 瀉利鹽 篩分法 掃描電鏡

【摘要】：以煤油介質(zhì),利用篩分法對(duì)青海西臺(tái)吉乃爾鹽湖鹽田蒸發(fā)光鹵石原礦進(jìn)行粒度分級(jí),通過X射線衍射方法確定各粒級(jí)顆粒礦物組成,運(yùn)用掃描電鏡表征細(xì)粒鹽類晶體微觀形貌特征,結(jié)合化學(xué)分析結(jié)果,揭示原礦粒度分布規(guī)律和礦物組成變化特征。結(jié)果表明:光鹵石原礦粒度分布屬于中細(xì)較粗粒級(jí),大于1mm粒徑的礦物比例不超過50%,而小于0.5mm粒徑的礦物不足10%;各粒徑礦物組分有變化,光鹵石主要集中在較細(xì)粒級(jí)范圍(0~1mm),瀉利鹽在各個(gè)粒級(jí)范圍內(nèi)均有出現(xiàn),粒度越大,瀉利鹽的含量越大,氯化鈉主要富集在中粒級(jí)范圍(1mm~3mm),水氯鎂石在各粒徑均有分布,無明顯變化。小于0.45mm粒徑礦物SEM和能譜分析結(jié)果表明:光鹵石表面圓潤(rùn),存在脫水的可能性;石鹽和瀉利鹽、光鹵石和瀉利鹽團(tuán)聚在一起,形成膠結(jié)狀聚集體。光鹵石原礦的粒度分布特征和礦物微結(jié)構(gòu)特征影響分解轉(zhuǎn)化過程體系的水平衡和溶液相平衡,對(duì)氯化鉀收率產(chǎn)生影響。
[Abstract]:The granularity of evaporated carnallite ore in the salt field of Jinai Salt Lake, West Taiwan, Qinghai was classified by sieving method in kerosene medium, and the mineral composition of each particle was determined by X-ray diffraction method. Scanning electron microscopy (SEM) was used to characterize the microscopic morphology of fine salt crystals, and the results were combined with chemical analysis. The results show that the particle size distribution of carnallite is of medium and coarse size, and the ratio of minerals larger than 1 mm is less than 50%. The mineral size less than 0.5 mm is less than 10%. The content of carnallite is mainly concentrated in the fine grain level range of 0 ~ 1 mm ~ (-1 mm). The larger the grain size is, the larger the content of purge salt is, and the more the grain size is, the more the content of purge salt is. Sodium chloride is mainly concentrated in the medium grain size range of 1 mm ~ 3 mm ~ (-1) m ~ (-1) m ~ (-1) ~ (-1) m ~ (-1) ~ (-1) m ~ (-1). The results of SEM and energy spectrum analysis show that the surface of carnallite is round and dehydration is possible. The aggregate of stone salt and Xieli salt carnallite and cellitic salt formed cemented aggregates. The particle size distribution characteristics and mineral microstructure characteristics of carnallite raw ore affected the water balance and solution phase equilibrium in the process of decomposition and transformation. The yield of potassium chloride was affected.
【作者單位】： 中國(guó)科學(xué)院青海鹽湖研究所;青海省鹽湖地質(zhì)與環(huán)境重點(diǎn)實(shí)驗(yàn)室;中國(guó)科學(xué)院大學(xué);
【基金】：中國(guó)科學(xué)院青海鹽湖研究所青年引導(dǎo)基金(Y460221047) 青海省科技廳基礎(chǔ)研究項(xiàng)目(2016-ZJ-781)
【分類號(hào)】：P619.211;P575
【正文快照】： p膒苝，

本文編號(hào)：1395571