英语翻译3.3.Flotation of Abu Tartour phosphate ore (sample 450)I

英语翻译
3.3.Flotation of Abu Tartour phosphate ore (sample 450)
In most of the chemical analysis of the flotation products of this
ore,loss of ignition (LOI) of the\x05flotation products as well as the
concentrate weight recovery,were used as indicators for comparing
the quality of the products under various conditions.This is because
removal of carbonates was the main issue of this investigation,and
also because of the large number of flotation tests whose products had
to be chemically analyzed.
Contrary to what is expected from phosphate ores containing
carbonates,Abu Tartour phosphate ore gave acidic reactions when
soaked in water.The pH of the stirred pulp (50 g solid + 500 cc water) is
normally less than 6.0.To keep the pH of the slurry at the required pH
(5.8–6.0) in the case of Abu Tartour sample,the system pH was
artificially increased,using KOH,and then brought to the desired pH
by the addition of the phosphate depressing reagents; or the
depressing reagents (acids or acidic salts) were added first and then
the pH of the system was raised to the desired pH value by adding
KOH.This behavior of Abu Tartour sample is probably due to:a) rate of
dissolution of the carbonate minerals is very low,b) presence of pyrite
gives acidic reactions,and/or c) surface adsorption of OH−\x05ions from
the system.However,this property of slow dissolution of the ore
makes the pH control of the slurry,and hence the flotation operation
quite easy.In fact,once the pH was adjusted,it remained practically
constant.
3.3.1.Effect of pH
Table 9 shows the results obtained in presence of 1.6 kg/ton KOl,
2.0 kg/ton KH2PO4at various pH values.The first test was conducted in
absence of KOH.In all other tests,KOH was added to the system in
order to increase the pH to the desired value.Fig.3 shows that the best
pH for floating carbonates from Abu Tartour phosphate sample is at
pH 5.6–5.9.Notice that selectivity of the flotation operation sharply
deteriorates over pH 6,where carbonate minerals were depressed.
Below pH 5.5,the flotation sensitivity deteriorates due to flotation

3.3.阿布Tartour浮选磷矿石（样品450）
鉴于本产品的化学分析浮选最
矿石,灼烧损失（意向书）的浮选产品以及
集中体重恢复,被用来作为比较指标
在各种条件下的产品质量.这是因为
碳酸盐去除这项调查的主要问题,
也因为大量的浮选试验,其产品已
是化学分析.
相反的是,预计从含有磷酸盐矿石
碳酸盐,磷酸盐矿给阿布Tartour酸性反应时
浸泡在水中.该搅拌浆的pH值（50克固体+ 500毫升水）
通常小于6.0.为了保持在规定的pH值pH值的浆料
（5.8-6.0）在阿布Tartour样本情况下,系统pH值
人为地增加,使用氢氧化钾,再运到所需的pH值
由试剂的添加磷酸盐郁闷;或
（酸或酸性盐）令人沮丧的试剂,然后再分别加入
该系统的pH值提高到所需的pH值,加入
氢氧化钾.这种行为是阿布Tartour样品可能是由于：1）率
对碳酸盐矿物溶解很低,B）的黄铁矿的存在
使酸性反应,和/或C）表面的OH -离子的吸附
系统.然而,这种缓慢的矿石的财产,解除
使得浆料pH值控制,因此浮选作业
非常简单.事实上,一旦pH值调整,但仍几乎
常数.
3.3.1.pH的影响
表9显示了存在的1.6公斤/吨科尔取得的成果,
2.0公斤/吨KH2PO4at不同pH值.第一次测试是在
缺乏氢氧化钾.在所有其他的测试,氢氧化钾被添加到系统中
为了提高pH值至所需的值.图.3表明,最好的
从Abu Tartour浮动碳酸盐磷酸盐样品pH值在
pH值5.6-5.9.请注意,选择性浮选作业急剧
在pH值6恶化,其中碳酸盐矿物沮丧.
pH值低于5.5,由于浮选浮选灵敏度恶化