磷肥与复肥
燐肥與複肥
린비여복비
PHOSPHATE & COMPOUND FERTILIZER
2012年
2期
13-14,17
,共3页
硝酸%磷矿%除钙率%硝酸磷肥
硝痠%燐礦%除鈣率%硝痠燐肥
초산%린광%제개솔%초산린비
nitric acid%phosphate rock%calcium removal rate%nitrophosphate
以贵州某磷矿为研究对象，利用w（HNO3）50％的硝酸分解磷精矿，并对获得的分解液进行冷冻结晶，探讨各种因素对除钙率的影响，得出在硝酸过量率10％～20％、冷冻终点温度-5℃、冷冻持续时间240～270min的条件下，可以获得75％以上除钙率，适宜硝酸磷肥生产的混合液。
以貴州某燐礦為研究對象，利用w（HNO3）50％的硝痠分解燐精礦，併對穫得的分解液進行冷凍結晶，探討各種因素對除鈣率的影響，得齣在硝痠過量率10％～20％、冷凍終點溫度-5℃、冷凍持續時間240～270min的條件下，可以穫得75％以上除鈣率，適宜硝痠燐肥生產的混閤液。
이귀주모린광위연구대상，이용w（HNO3）50％적초산분해린정광，병대획득적분해액진행냉동결정，탐토각충인소대제개솔적영향，득출재초산과량솔10％～20％、냉동종점온도-5℃、냉동지속시간240～270min적조건하，가이획득75％이상제개솔，괄의초산린비생산적혼합액。
Taking a certain phosphate rock of Guizhou Province as the research object, the treezmg crystallization treatment of phosphate decomposed liquid by nitric acid with w （IqN03） of 50% is studied, the effect of various factors on removal rate of Ca are investigated. It is concluded that with the nitric acid excess about 10%-20%, freeze final temperature at -5 ℃, and freeze remain time about 240-270 min, the calcium removal rate above 75% can be obtained, and the mixture is favorable to produce nitrophosphate fertilizer .
