With the rapid consumption of tungsten ore resources which were easy to beneficiation, the low-grade refractory scheelite has become the main source of tungsten production. In this study, a new reagent recipe was proposed to improve scheelite flotation efficiency and reduce carbon emission in flotation process by taking Sandaozhuang strongly altered ore as an example. The mineralogical study indicated that the content of WO in this ore was 0.0952 %, and 83.16 % of WO occurred in scheelite. The high content of calcium-containing gangue, easy-argillation gangue and fine scheelite jointly made it difficult to recover scheelite efficiently. The batch flotation tests shown that under the conditions of NaCO 1800 g/t, SS 600 g/t, SG 60 g/t, engine oil 20 g/t and FX-8 180 g/t, a rough concentrate with WO grade of 1.503 % and WO recovery of 79.40 % can be obtained. The industrial tests and application shown that this new reagent recipe had good industrial applicability and stability, and was conductive to improve the efficiency of the whole flotation process. The economic and environmental benefits analysis found that the application of this new reagent recipe in a 10,000 t/d scheelite flotation plant can create annual additional economic value of more than CNY 20 million, and reduce annual carbon emissions by more than 5000 t. Therefore, this new reagent recipe was worth popularizing and applying in similar refractory scheelite flotation plants.

中文翻译：

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提高难选钨矿浮选效率减少浮选过程碳排放——以河南三道庄矿床为例


随着易选矿钨矿资源的快速消耗，低品位难熔白钨矿已成为钨生产的主要来源。本研究以三道庄强蚀变矿为例，提出了一种新的药剂配方，以提高白钨矿浮选效率，减少浮选过程中的碳排放。矿物学研究表明，该矿石中WO含量为0.0952%，其中83.16%的WO赋存于白钨矿中。含钙脉石、易泥化脉石和细白钨矿含量较高，共同造成白钨矿的高效回收困难。间歇浮选试验表明，在NaCO 1 800 g/t、SS 600 g/t、SG 60 g/t、机油20 g/t、FX-8 180 g/t条件下，得到WO品位为可以获得1.503%和79.40%的WO回收率。工业试验和应用表明，该新药剂配方具有良好的工业适用性和稳定性，有利于提高整个浮选流程的效率。经济效益和环境效益分析发现，该新药剂配方在日产1万吨白钨矿浮选厂的应用，每年可创造额外经济价值2000万元以上，年减少碳排放5000吨以上。因此，该新药剂配方值得在同类耐火白钨矿浮选厂中推广应用。