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<p>我国钒钛资源丰富<sup>[1]</sup>Q主要分布在四川、云南、河北、两q及黑龙江等圎ͼ其中90%以上的钒钛磁铁矿分布在四川攀西地区。目前一般通过“阶D늣矎쀔阶D늣选”的Ҏ来回攉铁?sup>[2-3]</sup>Q通过强磁预选、重选、电选和选联合方法来回收选铁中的钛铁?sup>[4-5]</sup>。目前现部分强磁选钛_精矿先?.18mm分以后Q筛上进入球,{下q入二段强磁选别。现场实际运行过E中Q二D强精矿相对一D强精矿品呛_^均提??个百分点Q达不到设计要求提高6个百分点Q其?0.154mm_中单体解d较好的矿物也q入了球,因此考虑对一D强精矿进行预处理以减球负荷同时代替二D强。本文以攀西地区某强磁选粗钛精矿ؓ原料Q通过重?电?选联合流E综合回收其中的钛铁矿,矿山资源的高效利用提供技术依据?/p> <p>1 试验原料</p> <p>1.1矿物_度l成及TiO<sub>2</sub>分布</p> <p style="text-align: left;">?试验原矿_度l成{析 </p> <p style="text-align: left;">Table 1  The result of particle size analysis of crude concentrate of limenite</p> <table style="border-collapse:collapse;" border="1" bordercolor="#000000" cellspacing="0" cellpadding="0" width="100%"> <tbody> <tr> <td width="16%"> <p align="center">_/mm</p> </td> <td width="8%"> <p align="center">-1.00</p> <p align="center">+0.40</p> </td> <td width="8%"> <p align="center">-0.40</p> <p align="center">+0.28</p> </td> <td width="8%"> <p align="center">-0.28</p> <p align="center">+0.180</p> </td> <td width="8%"> <p align="center">-0.18</p> <p align="center">+0.154</p> </td> <td width="8%"> <p align="center">-0.15</p> <p align="center">+0.10</p> </td> <td width="8%"> <p align="center">-0.10</p> <p align="center">+0.074</p> </td> <td width="8%"> <p align="center">-0.074</p> <p align="center">+0.043</p> </td> <td width="8%"> <p align="center">-0.043</p> <p align="center">+0.038</p> </td> <td width="9%"> <p align="center">-0.038</p> </td> <td width="7%"> <p align="center">合计</p> </td> </tr> <tr> <td width="16%"> <p align="center">产率/%</p> </td> <td width="8%"> <p align="center">6.80</p> </td> <td width="8%"> <p align="center">8.80</p> </td> <td width="8%"> <p align="center">16.70</p> </td> <td width="8%"> <p align="center">18.40</p> </td> <td width="8%"> <p align="center">8.00</p> </td> <td width="8%"> <p align="center">19.50</p> </td> <td width="8%"> <p align="center">11.70</p> </td> <td width="8%"> <p align="center">2.70</p> </td> <td width="9%"> <p align="center">7.40</p> </td> <td width="7%"> <p align="center">100.00</p> </td> </tr> <tr> <td width="16%"> <p align="center">TiO<sub>2</sub>品位/%</p> </td> <td width="8%"> <p align="center">5.50</p> </td> <td width="8%"> <p align="center">6.86</p> </td> <td width="8%"> <p align="center">12.18</p> </td> <td width="8%"> <p align="center">21.69</p> </td> <td width="8%"> <p align="center">21.74</p> </td> <td width="8%"> <p align="center">23.60</p> </td> <td width="8%"> <p align="center">20.32</p> </td> <td width="8%"> <p align="center">20.18</p> </td> <td width="9%"> <p align="center">20.79</p> </td> <td width="7%"> <p align="center">17.80</p> </td> </tr> <tr> <td width="16%"> <p align="center">金布?%</p> </td> <td width="8%"> <p align="center">2.10 </p> </td> <td width="8%"> <p align="center">3.39 </p> </td> <td width="8%"> <p align="center">11.42 </p> </td> <td width="8%"> <p align="center">22.42 </p> </td> <td width="8%"> <p align="center">9.77 </p> </td> <td width="8%"> <p align="center">25.85 </p> </td> <td width="8%"> <p align="center">13.35 </p> </td> <td width="8%"> <p align="center">3.06 </p> </td> <td width="9%"> <p align="center">8.64 </p> </td> <td width="7%"> <p align="center">100.00 </p> </td> </tr> </tbody> </table> <p>从筛析结果可知:金属量在各个_均匀分布Q光靠分U处理难以有效提高试样品位。试验样品粒U越l品位越高,+0.28mm_的矿物品位较低,金属分布率也较低?0.28+0.10mm_?0.10mm_的矿物金属分布律分别?3.61%?0.90%?/p> <p>1.2试验矿物l成及含?/p> <p style="text-align: left;">?试验原矿矿物l成及含?/p> <table style="border-collapse:collapse;" border="1" bordercolor="#000000" cellspacing="0" cellpadding="0" align="left"> <tbody> <tr> <td width="91" style="text-align: center;"> <p style="text-align: center;">矿物名称</p> </td> <td width="91" style="text-align: center;"> <p style="text-align: center;">脉石</p> </td> <td width="91" style="text-align: center;"> <p style="text-align: center;">化?/p> </td> <td width="91" style="text-align: center;"> <p style="text-align: center;">钛铁?/p> </td> <td width="91" style="text-align: center;"> <p style="text-align: center;">钛磁铁矿</p> </td> <td width="91" style="text-align: center;"> <p style="text-align: center;">总量</p> </td> </tr> <tr> <td width="91" style="text-align: center;"> <p style="text-align: center;">重量/Q?/p> </td> <td width="91" style="text-align: center;"> <p style="text-align: center;">59.49</p> </td> <td width="91" style="text-align: center;"> <p style="text-align: center;">1.69</p> </td> <td width="91" style="text-align: center;"> <p style="text-align: center;">29.81</p> </td> <td width="91" style="text-align: center;"> <p style="text-align: center;">9.01</p> </td> <td width="91" style="text-align: center;"> <p style="text-align: center;">100.00</p> </td> </tr> </tbody> </table> <p><br> </p> <p><br> </p> <p>由原矿矿物组成分析可知,试验原矿中钛铁矿的含量ؓ29.81%Q钛铁矿的含量?.01%Q脉石矿物含量ؓ59.49%Q及量的硫化矿?.69%?/p> <p>2试验Ҏ </p> <p>本着减少矿的目的,q借鉴大量国内外生产经验,考虑_粒U和l粒U物料分U分选,_粒U物料经q重选抛䏀电选精选进行选矿试验Q细_物料׃TiO<sub>2</sub>品位辑ֈ20%以上Q可以直接进行Q选选别?/p> <p>3 试验l果及讨?/p> <p>3.1 重选试?/p> <p>׃试验原矿中脉石矿物的含量辑ֈ59.49%Q且脉石矿物和钛铁矿的比重差别较大Q可以先利用重选设备进行抛,下面利用摇床q行选矿试验?/p> <p>3.1.1摇床抛尾试验</p> <p>考虑_细物料q行分分选,试验主要探烦不同分_度下摇床重选抛试验效果。以一_一_流E进行试验,试验程如图1所C,试验l果见表3?/p> <p align="center"><img src="/ewebeditor/uploadfile/20180920090739938001.png" style="width: 550px; height: 320px;"><span style="font-size: 9pt;"> </span></p> <p style="text-align: left;">? 摇床抛尾试验l果</p> <p style="text-align: left;">Table 3 Tabling test results</p> <table style="border-collapse:collapse;" border="1" bordercolor="#000000" cellspacing="0" cellpadding="0" width="551"> <tbody> <tr> <td width="101" nowrap=""> <p align="center">_度U别</p> </td> <td width="175" nowrap=""> <p align="center">产品名称</p> </td> <td width="150" nowrap=""> <p align="center">产率/%</p> </td> <td width="125" nowrap=""> <p align="center">TiO<sub>2</sub>品位/%</p> </td> </tr> <tr> <td width="101" nowrap="" rowspan="4"> <p align="center">全粒U?/p> </td> <td width="175" nowrap=""> <p align="center">_</p> </td> <td width="150" nowrap=""> <p align="center">18.62</p> </td> <td width="125" nowrap=""> <p align="center">44.21</p> </td> </tr> <tr> <td width="175" nowrap=""> <p align="center">中矿</p> </td> <td width="150" nowrap=""> <p align="center">40.80</p> </td> <td width="125" nowrap=""> <p align="center">10.21</p> </td> </tr> <tr> <td width="175" nowrap=""> <p align="center"></p> </td> <td width="150" nowrap=""> <p align="center">40.58</p> </td> <td width="125" nowrap=""> <p align="center">10.61</p> </td> </tr> <tr> <td width="175" nowrap=""> <p align="center">原矿</p> </td> <td width="150" nowrap=""> <p align="center">100.00</p> </td> <td width="125" nowrap=""> <p align="center">17.11</p> </td> </tr> <tr> <td width="101" nowrap="" rowspan="4"> <p align="center">-1.0--+0.1</p> </td> <td width="175" nowrap=""> <p align="center">_</p> </td> <td width="150" nowrap=""> <p align="center">20.25</p> </td> <td width="125" nowrap=""> <p align="center">40.71</p> </td> </tr> <tr> <td width="175" nowrap=""> <p align="center">中矿</p> </td> <td width="150" nowrap=""> <p align="center">37.59</p> </td> <td width="125" nowrap=""> <p align="center">14.37</p> </td> </tr> <tr> <td width="175" nowrap=""> <p align="center"></p> </td> <td width="150" nowrap=""> <p align="center">42.16</p> </td> <td width="125" nowrap=""> <p align="center">4.00</p> </td> </tr> <tr> <td width="175" nowrap=""> <p align="center">原矿</p> </td> <td width="150" nowrap=""> <p align="center">100.00</p> </td> <td width="125" nowrap=""> <p align="center">15.33</p> </td> </tr> <tr> <td width="101" nowrap="" rowspan="4"> <p align="center">-1.0--+0.074</p> </td> <td width="175" nowrap=""> <p align="center">_</p> </td> <td width="150" nowrap=""> <p align="center">20.35</p> </td> <td width="125" nowrap=""> <p align="center">44.32</p> </td> </tr> <tr> <td width="175" nowrap=""> <p align="center">中矿</p> </td> <td width="150" nowrap=""> <p align="center">41.33</p> </td> <td width="125" nowrap=""> <p align="center">15.36</p> </td> </tr> <tr> <td width="175" nowrap=""> <p align="center"></p> </td> <td width="150" nowrap=""> <p align="center">38.32</p> </td> <td width="125" nowrap=""> <p align="center">4.25</p> </td> </tr> <tr> <td width="175" nowrap=""> <p align="center">原矿</p> </td> <td width="150" nowrap=""> <p align="center">100.00</p> </td> <td width="125" nowrap=""> <p align="center">17.00</p> </td> </tr> <tr> <td width="101" nowrap="" rowspan="4"> <p align="center">-1.0--+0.043</p> </td> <td width="175" nowrap=""> <p align="center">_</p> </td> <td width="150" nowrap=""> <p align="center">20.45</p> </td> <td width="125" nowrap=""> <p align="center">42.32</p> </td> </tr> <tr> <td width="175" nowrap=""> <p align="center">中矿</p> </td> <td width="150" nowrap=""> <p align="center">42.46</p> </td> <td width="125" nowrap=""> <p align="center">15.36</p> </td> </tr> <tr> <td width="175" nowrap=""> <p align="center"></p> </td> <td width="150" nowrap=""> <p align="center">37.09</p> </td> <td width="125" nowrap=""> <p align="center">6.42</p> </td> </tr> <tr> <td width="175" nowrap=""> <p align="center">原矿</p> </td> <td width="150" nowrap=""> <p align="center">100.00</p> </td> <td width="125" nowrap=""> <p align="center">17.48</p> </td> </tr> </tbody> </table> <p>从试验结果可知,l合考虑抛尾率及抛尾的尾矿品位,?.1mmq行分抛尾效果较理惟?/p> <p>3.2电选试?/p> <p> ?1.0--+0.1mm_的矿物进行摇床试验以后,获得的精矿和中矿混合作ؓ电选原矿进行条件试验。由于电选机对入选粒度的要求Q将该原料中-1.0--+0.4以上的物料隔M后再q行电选试验?1.0+0.4mm_的物料作为磨?选试验的原料?/p> <p>影响电选的因数主要有圆{{速、分选电压及甉|极距及物料温度。本ơ试验主要探索圆{{速和分选电压对选别指标的媄响?/p> <p>3.2.1  圆筒转速试?/p> <p>׃原矿中含有少量钛铁矿会对电选造成影响Q所以先q行q式除铁Q除铁后?0.40+0.10mm_矿物q行电选试验,以一_两_流E进行电选试验,实验重点考察_选滚{{速对试验的媄响。试验流E如?所C,试验l果见表4.</p> <p style="text-align: center;"><img src="/ewebeditor/uploadfile/20180920090739543002.png" style="width: 467px; height: 476px;" align="center"></p> <p style="text-align: left;">?  电选试验结?/p> <p style="text-align: left;">Table 4  electrical test results</p> <table style="border-collapse:collapse;" border="1" bordercolor="#000000" cellspacing="0" cellpadding="0" width="100%"> <tbody> <tr> <td width="22%" nowrap=""> <p align="center">_选{?/p> </td> <td width="26%" nowrap=""> <p align="center">产品名称</p> </td> <td width="26%" nowrap=""> <p align="center">产率/%</p> </td> <td width="26%" nowrap=""> <p align="center">TiO<sub>2</sub>品位/%</p> </td> </tr> <tr> <td width="22%" nowrap="" rowspan="4"> <p align="center">230r/min</p> </td> <td width="26%" nowrap=""> <p align="center">늲</p> </td> <td width="26%" nowrap=""> <p align="center">30.37</p> </td> <td width="26%" nowrap=""> <p align="center">47.35</p> </td> </tr> <tr> <td width="26%" nowrap=""> <p align="center">中矿</p> </td> <td width="26%" nowrap=""> <p align="center">19.69</p> </td> <td width="26%" nowrap=""> <p align="center">40.56</p> </td> </tr> <tr> <td width="26%" nowrap=""> <p align="center"></p> </td> <td width="26%" nowrap=""> <p align="center">49.94</p> </td> <td width="26%" nowrap=""> <p align="center">5.34</p> </td> </tr> <tr> <td width="26%" nowrap=""> <p align="center">原矿</p> </td> <td width="26%" nowrap=""> <p align="center">100.00</p> </td> <td width="26%" nowrap=""> <p align="center">25.03</p> </td> </tr> <tr> <td width="22%" nowrap="" rowspan="4"> <p align="center">200r/min</p> </td> <td width="26%" nowrap=""> <p align="center">늲</p> </td> <td width="26%" nowrap=""> <p align="center">26.45</p> </td> <td width="26%" nowrap=""> <p align="center">47.91</p> </td> </tr> <tr> <td width="26%" nowrap=""> <p align="center">中矿</p> </td> <td width="26%" nowrap=""> <p align="center">24.32</p> </td> <td width="26%" nowrap=""> <p align="center">37.10</p> </td> </tr> <tr> <td width="26%" nowrap=""> <p align="center"></p> </td> <td width="26%" nowrap=""> <p align="center">49.23</p> </td> <td width="26%" nowrap=""> <p align="center">6.75</p> </td> </tr> <tr> <td width="26%" nowrap=""> <p align="center">原矿</p> </td> <td width="26%" nowrap=""> <p align="center">100.00</p> </td> <td width="26%" nowrap=""> <p align="center">25.02</p> </td> </tr> <tr> <td width="22%" nowrap="" rowspan="4"> <p align="center">180r/min</p> </td> <td width="26%" nowrap=""> <p align="center">늲</p> </td> <td width="26%" nowrap=""> <p align="center">23.67</p> </td> <td width="26%" nowrap=""> <p align="center">48.33</p> </td> </tr> <tr> <td width="26%" nowrap=""> <p align="center">中矿</p> </td> <td width="26%" nowrap=""> <p align="center">24.75</p> </td> <td width="26%" nowrap=""> <p align="center">41.31</p> </td> </tr> <tr> <td width="26%" nowrap=""> <p align="center"></p> </td> <td width="26%" nowrap=""> <p align="center">51.58</p> </td> <td width="26%" nowrap=""> <p align="center">6.89</p> </td> </tr> <tr> <td width="26%" nowrap=""> <p align="center">原矿</p> </td> <td width="26%" nowrap=""> <p align="center">100.00</p> </td> <td width="26%" nowrap=""> <p align="center">25.22</p> </td> </tr> </tbody> </table> <p>从试验结果可知,不同_选{速条件下Q精矿品位都?7%以上Q随着_N{速降低,_品位升高Q尾矿品位升高。综合考虑_选{速在230r/min比较合适?</p> <p>3.2.2 电选电压试?/p> <p>电选电压每一保持一致。由圆筒转速试验可知,固定_选圆{{速ؓ230r/min条g下进行电压:30kv?4kv?8kv 3个条件试验,试验程如图2所C,试验l果见表5.</p> <p align="center"> </p> <p style="text-align: left;">?  电选试验结?/p> <p style="text-align: left;">Table 5  electrical test results</p> <table style="border-collapse:collapse;" border="1" bordercolor="#000000" cellspacing="0" cellpadding="0" width="100%"> <tbody> <tr> <td width="25%" nowrap=""> <p align="center">试验电压</p> </td> <td width="31%" nowrap=""> <p align="center">产品名称</p> </td> <td width="21%" nowrap=""> <p align="center">产率/%</p> </td> <td width="21%" nowrap=""> <p align="center">TiO<sub>2</sub>品位/%</p> </td> </tr> <tr> <td width="25%" nowrap="" rowspan="4"> <p align="center">30kv</p> </td> <td width="31%" nowrap=""> <p align="center">늲</p> </td> <td width="21%" nowrap=""> <p align="center">30.37</p> </td> <td width="21%" nowrap=""> <p align="center">47.35</p> </td> </tr> <tr> <td width="31%" nowrap=""> <p align="center">中矿</p> </td> <td width="21%" nowrap=""> <p align="center">19.69</p> </td> <td width="21%" nowrap=""> <p align="center">40.56</p> </td> </tr> <tr> <td width="31%" nowrap=""> <p align="center"></p> </td> <td width="21%" nowrap=""> <p align="center">49.94</p> </td> <td width="21%" nowrap=""> <p align="center">5.34</p> </td> </tr> <tr> <td width="31%" nowrap=""> <p align="center">原矿</p> </td> <td width="21%" nowrap=""> <p align="center">100.00</p> </td> <td width="21%" nowrap=""> <p align="center">25.03</p> </td> </tr> <tr> <td width="25%" nowrap="" rowspan="4"> <p align="center">34kv</p> </td> <td width="31%" nowrap=""> <p align="center">늲</p> </td> <td width="21%" nowrap=""> <p align="center">28.64</p> </td> <td width="21%" nowrap=""> <p align="center">47.53</p> </td> </tr> <tr> <td width="31%" nowrap=""> <p align="center">中矿</p> </td> <td width="21%" nowrap=""> <p align="center">20.87</p> </td> <td width="21%" nowrap=""> <p align="center">39.85</p> </td> </tr> <tr> <td width="31%" nowrap=""> <p align="center"></p> </td> <td width="21%" nowrap=""> <p align="center">51.49</p> </td> <td width="21%" nowrap=""> <p align="center">5.96</p> </td> </tr> <tr> <td width="31%" nowrap=""> <p align="center">原矿</p> </td> <td width="21%" nowrap=""> <p align="center">100.00</p> </td> <td width="21%" nowrap=""> <p align="center">25.00</p> </td> </tr> <tr> <td width="25%" nowrap="" rowspan="4"> <p align="center">38kv</p> </td> <td width="31%" nowrap=""> <p align="center">늲</p> </td> <td width="21%" nowrap=""> <p align="center">27.69</p> </td> <td width="21%" nowrap=""> <p align="center">48.23</p> </td> </tr> <tr> <td width="31%" nowrap=""> <p align="center">中矿</p> </td> <td width="21%" nowrap=""> <p align="center">21.32</p> </td> <td width="21%" nowrap=""> <p align="center">41.12</p> </td> </tr> <tr> <td width="31%" nowrap=""> <p align="center"></p> </td> <td width="21%" nowrap=""> <p align="center">50.99</p> </td> <td width="21%" nowrap=""> <p align="center">5.86</p> </td> </tr> <tr> <td width="31%" nowrap=""> <p align="center">原矿</p> </td> <td width="21%" nowrap=""> <p align="center">100.00</p> </td> <td width="21%" nowrap=""> <p align="center">25.11</p> </td> </tr> </tbody> </table> <p>从试验结果可知, 随着电选电压的增高Q精矿品位变化不大,对该物料而言Q综合考虑回收率及选矿成本Q?0kV为比较合适的分选电压?/p> <p>3.3  选试?/p> <p>选采用一_两_ּ路流E进行试验,试验主要探烦_选硫酸用量和捕收剂用量对选的影响。Q选试验流E如?所C?span style="font-size: 9pt;"> </span></p> <p style="text-align: center;"> <img src="/ewebeditor/uploadfile/20180920090739805003.png" style="font-size: 9pt; width: 552px; height: 400px;"></p> <p>3.3.1选原矿准?/p> <p>l过物料q计算Q将原矿?1.0+0.4_、电选中矿按1:1的比例؜合后q行矿?200目占50%。然后与原矿?0.1mm_的矿物按1:3混合q行选试验?/p> <p>3.3.2 酸用量试验</p> <p>先经选脱后q行选钛_选试?固定捕收剂MOH用量1800g/t条g下进行H<sub>2</sub>SO<sub>4</sub>用量Q?00g/t?000g/t?300g/t?500g/t 4个用量试验,选结果如?所C?/p> <p style="text-align: left;">?选试验结?/p> <p style="text-align: left;">Table 6  Flotation test results</p> <table style="border-collapse:collapse;" border="1" bordercolor="#000000" cellspacing="0" cellpadding="0"> <tbody> <tr> <td width="109"> <p align="center">酸用量/g/t</p> </td> <td width="112"> <p align="center">产品名称</p> </td> <td width="116"> <p align="center">品位/%</p> </td> <td width="116"> <p align="center">产率/%</p> </td> <td width="116"> <p align="center">_回收?%</p> </td> </tr> <tr> <td width="109" rowspan="3"> <p align="center">800</p> </td> <td width="112"> <p align="center">_</p> </td> <td width="116"> <p align="center">29.43</p> </td> <td width="116"> <p align="center">75.16</p> </td> <td width="116" rowspan="3"> <p align="center">95.31</p> </td> </tr> <tr> <td width="112"> <p align="center"></p> </td> <td width="116"> <p align="center">4.12</p> </td> <td width="116"> <p align="center">26.44</p> </td> </tr> <tr> <td width="112"> <p align="center">原矿</p> </td> <td width="116"> <p align="center">23.21</p> </td> <td width="116"> <p align="center">100.00</p> </td> </tr> <tr> <td width="109" rowspan="3"> <p align="center">1000</p> </td> <td width="112"> <p align="center">_</p> </td> <td width="116"> <p align="center">33.66</p> </td> <td width="116"> <p align="center">66.62</p> </td> <td width="116" rowspan="3"> <p align="center">95.32</p> </td> </tr> <tr> <td width="112"> <p align="center"></p> </td> <td width="116"> <p align="center">3.30</p> </td> <td width="116"> <p align="center">33.38</p> </td> </tr> <tr> <td width="112"> <p align="center">原矿</p> </td> <td width="116"> <p align="center">23.24</p> </td> <td width="116"> <p align="center">100.00</p> </td> </tr> <tr> <td width="109" rowspan="3"> <p align="center">1300</p> </td> <td width="112"> <p align="center">_</p> </td> <td width="116"> <p align="center">36.39</p> </td> <td width="116"> <p align="center">57.16</p> </td> <td width="116" rowspan="3"> <p align="center">90.04</p> </td> </tr> <tr> <td width="112"> <p align="center"></p> </td> <td width="116"> <p align="center">5.37</p> </td> <td width="116"> <p align="center">42.84</p> </td> </tr> <tr> <td width="112"> <p align="center">原矿</p> </td> <td width="116"> <p align="center">23.10</p> </td> <td width="116"> <p align="center">100.00</p> </td> </tr> <tr> <td width="109" rowspan="3"> <p align="center">1500</p> </td> <td width="112"> <p align="center">_</p> </td> <td width="116"> <p align="center">39.66</p> </td> <td width="116"> <p align="center">51.87</p> </td> <td width="116" rowspan="3"> <p align="center">88.00</p> </td> </tr> <tr> <td width="112"> <p align="center"></p> </td> <td width="116"> <p align="center">5.81</p> </td> <td width="116"> <p align="center">48.13</p> </td> </tr> <tr> <td width="112"> <p align="center">原矿</p> </td> <td width="116"> <p align="center">23.36</p> </td> <td width="116"> <p align="center">100.00</p> </td> </tr> </tbody> </table> <p>p验结果可知,随着酸用量的增加,_品位逐渐提高Q回收率逐渐降低Q综合考虑_品位、回收率及药剂成本,_选硫怋用量?000g/t比较合适?/p> <p>3.3.3捕收剂用量试?/p> <p>固定酸用量?000g/t条g下,q行捕收剂MOH用量Q?200g/t?500g/t?800g/t?200g/t 4个条件试验,试验l果如表7所C?/p> <p style="text-align: left;">?选试验结?/p> <p>Table 7  Flotation test results</p> <table style="border-collapse:collapse;" border="1" bordercolor="#000000" cellspacing="0" cellpadding="0"> <tbody> <tr> <td width="109"> <p align="center">MOH用量/g/t</p> </td> <td width="112"> <p align="center">产品名称</p> </td> <td width="116"> <p align="center">品位/%</p> </td> <td width="116"> <p align="center">产率/%</p> </td> <td width="116"> <p align="center">_回收?%</p> </td> </tr> <tr> <td width="109" rowspan="3"> <p align="center">1200</p> </td> <td width="112"> <p align="center">_</p> </td> <td width="116"> <p align="center">46.52</p> </td> <td width="116"> <p align="center">38.48</p> </td> <td width="116" rowspan="3"> <p align="center">76.38</p> </td> </tr> <tr> <td width="112"> <p align="center"></p> </td> <td width="116"> <p align="center">9.00</p> </td> <td width="116"> <p align="center">61.52</p> </td> </tr> <tr> <td width="112"> <p align="center">原矿</p> </td> <td width="116"> <p align="center">23.44</p> </td> <td width="116"> <p align="center">100.00</p> </td> </tr> <tr> <td width="109" rowspan="3"> <p align="center">1500</p> </td> <td width="112"> <p align="center">_</p> </td> <td width="116"> <p align="center">42.66</p> </td> <td width="116"> <p align="center">49.26</p> </td> <td width="116" rowspan="3"> <p align="center">89.17</p> </td> </tr> <tr> <td width="112"> <p align="center"></p> </td> <td width="116"> <p align="center">5.03</p> </td> <td width="116"> <p align="center">50.74</p> </td> </tr> <tr> <td width="112"> <p align="center">原矿</p> </td> <td width="116"> <p align="center">23.57</p> </td> <td width="116"> <p align="center">100.00</p> </td> </tr> <tr> <td width="109" rowspan="3"> <p align="center">1800</p> </td> <td width="112"> <p align="center">_</p> </td> <td width="116"> <p align="center">33.66</p> </td> <td width="116"> <p align="center">66.62</p> </td> <td width="116" rowspan="3"> <p align="center">95.32</p> </td> </tr> <tr> <td width="112"> <p align="center"></p> </td> <td width="116"> <p align="center">3.30</p> </td> <td width="116"> <p align="center">33.38</p> </td> </tr> <tr> <td width="112"> <p align="center">原矿</p> </td> <td width="116"> <p align="center">23.52</p> </td> <td width="116"> <p align="center">100.00</p> </td> </tr> <tr> <td width="109" rowspan="3"> <p align="center">2200</p> </td> <td width="112"> <p align="center">_</p> </td> <td width="116"> <p align="center">30.65</p> </td> <td width="116"> <p align="center">71.56</p> </td> <td width="116" rowspan="3"> <p align="center">94.38</p> </td> </tr> <tr> <td width="112"> <p align="center"></p> </td> <td width="116"> <p align="center">4.59</p> </td> <td width="116"> <p align="center">28.44</p> </td> </tr> <tr> <td width="112"> <p align="center">原矿</p> </td> <td width="116"> <p align="center">23.24</p> </td> <td width="116"> <p align="center">100.00</p> </td> </tr> </tbody> </table> <p>p验结果可知,随着捕收剂用量的增加QTiO<sub>2</sub>回收率增加,_选精矿品位降低,l合考虑_选精矿品位和回收率,在硫酔R用量1000g/t条g下,捕收剂用量ؓ1800g/tӞ效果最佻I有利于下一步试验?/p> <p>3.4 全流E试?/p> <p>在开展了大量条g试验的基上进行了全流E试验,试验程如图4所C,试验l果见表8.</p> <p style="text-align: left;">? 选试验结?/p> <p style="text-align: left;">Table 8  Flotation test results</p> <table style="border-collapse:collapse;" border="1" bordercolor="#000000" cellspacing="0" cellpadding="0"> <tbody> <tr> <td width="142" valign="top"> <p align="center">产品名称</p> </td> <td width="142" valign="top"> <p align="center">产率/%</p> </td> <td width="142" valign="top"> <p align="center">TiO<sub>2</sub>品位/%</p> </td> <td width="142" valign="top"> <p align="center">回收?%</p> </td> </tr> <tr> <td width="142" valign="top"> <p align="center">电选精?/p> </td> <td width="142" valign="top"> <p align="center">9.53</p> </td> <td width="142" valign="top"> <p align="center">47.35</p> </td> <td width="142" valign="top"> <p align="center">25.29</p> </td> </tr> <tr> <td width="142" valign="top"> <p align="center">选精?/p> </td> <td width="142" valign="top"> <p align="center">20.07</p> </td> <td width="142" valign="top"> <p align="center">47.01</p> </td> <td width="142" valign="top"> <p align="center">52.88</p> </td> </tr> <tr> <td width="142" valign="top"> <p align="center"></p> </td> <td width="142" valign="top"> <p align="center">70.40</p> </td> <td width="142" valign="top"> <p align="center">5.53</p> </td> <td width="142" valign="top"> <p align="center">21.82</p> </td> </tr> <tr> <td width="142" valign="top"> <p align="center">原矿</p> </td> <td width="142" valign="top"> <p align="center">100.00</p> </td> <td width="142" valign="top"> <p align="center">17.84</p> </td> <td width="142" valign="top"> <p align="center">100.00</p> </td> </tr> </tbody> </table> <p><br> </p> <div style="text-align: center;"><img width="552" height="458" src="/ewebeditor/uploadfile/20180920090739764004.png" align="center" style="font-size: 9pt;"></div> <p></p> <p> </p> <p>6l论</p> <p>Q?Q试验原矿按0.1mm分Q?+0.1mm_物料l重选抛,重选精矿经除铁后电选可获得产率?.53%Q品位ؓ47.35%的电选精ѝ?1.0+0.4mm_物料和电选中矿؜合后l磨矿至-200?0%Q与0.1mm_物料?:3混合l过选可以得C率ؓ20.07%Q品位ؓ47.01%的Q选精ѝ?/p> <p> </p> <br> <p></p> <p></p> <p></p> <p>作者:杨道q(攀钢集团矿业有限公司)本文发表于《现代矿业?018q第8?/p> <p style="color: rgb(0, 0, 0); font-family: 宋体; font-size: 12px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-indent: 0px; 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