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首页> 外文会议>International Congress on Water Management in Mining >(Chapter5)Speciation of Water Streams in Copper Concentration Plants using the Hydro-geochemical Code PhreeqC
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(Chapter5)Speciation of Water Streams in Copper Concentration Plants using the Hydro-geochemical Code PhreeqC

机译：（第5章）使用水力地球化学码Phreeqc的铜浓度植物中水流的形态

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This work presents the speciation of metals and main dissolved solutes in high saline water of copper concentration plant. Speciation of two case studies for process waters in contact with an ore were modelled and solved using the hydro-geo-chemical software code PhreeqC. The first case study is defined by the use of hydrated lime to increment the pH of the fresh water containing high concentrations of sulfate and other elements. The case study is defined by the mixing of fresh water with water containing aluminium and potassium. All this with the purpose of determining the critical concentration of sulfate in the water, defined as the concentration at which there will not be precipitation of sulfate as gypsum or another compound of sulfate. Results of the first case study indicated gypsum, brucite, dolomite and calcite were contributing greatly to the total weight of precipitated phases obtained in the pH range between 6 and 12. It recommends the removal of these precipitates prior to the use of the process water for concentrate flotation. Results of the second case study indicated that the mixing of fresh water with the recycle one from the process containing Al and K will form mainly alunite. Gypsum was not formed due to low value of dissolved calcium concentration. If pH is increased by adding lime, the alunite will dissolve followed by precipitation of diaspora, clinochlore, and gypsum. Ettringite precipitated at pH > 11. Finally, laboratory experiments and observations in the field showed that PhreeqC could be a good tool to explain and to interpret qualitatively some problems arising in mining activities, such as precipitation and dissolution processes. Quantitative solutions require further study in order to include better thermochemical properties of mineral and dissolved solutes.
机译：该作品介绍了铜浓度植物高盐水中金属和主要溶解溶质的形态。使用水力地理化学软件代码Phreeqc进行建模和解决了与矿石接触的两个案例研究的形式研究。第一种案例研究由使用水合石灰来定义，以将含有高浓度的硫酸盐和其他元素的淡水的pH值。案例研究由淡水与含铝和钾的水混合来定义。所有这一切的目的是确定水中硫酸盐的临界浓度，定义为不沉淀硫酸盐作为石膏或另一种硫酸盐的浓度。第一种案例研究表明石膏，布苏酸盐，白云石和方解石的贡献大大致力于在6和12之间的pH范围内获得的沉淀相的总重量。它建议在使用过程水之前去除这些沉淀物浓缩浮选。第二种情况研究结果表明，淡水与含有Al和K的过程中的再循环混合将主要形成三屋。由于溶解的钙浓度的低值，没有形成石膏。如果通过加入石灰增加pH，则大铝石将溶解，然后析出侨民，临床勒索和石膏。 Ettringite在pH> 11沉淀出来。最后，实验室实验和观察结果表明，Phreeqc可以是解释和解释采矿活动中出现的定性存在的良好工具，例如降水和溶解过程。定量溶液需要进一步研究，以包括矿物质和溶解溶质的更好的热化学性质。

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