CN108160334B - 一种钨锡矿物捕收剂的制备方法 - Google Patents
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Abstract
本发明公开了一种钨锡矿物捕收剂的制备方法,该方法包括以下步骤:(1)将10~30g十八胺加入到100~150ml体积浓度为10%‑30%的叔丁醇溶液中,加热使其溶解,在常温中将其冷却至30℃;(2)在步骤(1)得到的溶液中加入10‑20g顺丙烯二酸一甲酯,在30℃保温2h;(3)在步骤(2)得到的溶液中加入15~25ml25%亚叔丁醇钠溶液得到产物A;(4)将10~30g丁烯二酸酐与10~30ml1mol/L盐酸配制成溶液并在冰浴中冷却至20℃;(5)将步骤(4)所得溶液与步骤(3)所得产物A在pH8~10条件下偶合得到产物B;(6)把步骤(5)所得产物B与磺化琥珀酰胺在pH10~12条件下偶合,得到黑色易溶于水的粉末,即为所述捕收剂。本发明的捕收剂能够有效回收细粒钨锡,捕收能力强,药剂用量少,无毒无污染。
Description
技术领域
本发明属于矿物加工药剂技术领域,具体涉及一种钨锡矿物捕收剂的制备方法,该捕收剂对于细粒级钨锡矿(-37μm)的浮选回收有很好的效果。
背景技术
常用的钨锡捕收剂为油酸类、731氧化石蜡皂等,这些捕收剂对于+74μm粒级的钨锡矿物有着较好的效果,对细粒级钨锡矿(-37μm)的回收效果较差,而在钨锡矿的生产过程中,由于钨锡矿物脆性大,会产生很多钨锡细泥。细泥的物理性质及表面特性均发生了变化。对这部分钨锡金属采用常规捕收剂,钨锡品位和回收率均较低。本发明涉及一种钨锡矿物捕收剂的制备方法,该捕收剂能够高效回收细粒级钨锡。
发明内容
本发明的目的是提供一种钨锡矿物捕收剂的制备方法。该捕收剂特别有益于细粒级钨锡矿(-37μm)的浮选回收,采用此捕收剂进行浮选回收钨锡,能得到较高品位和回收率的钨锡精矿。
本发明采用以下技术方案达到上述目的。
一种钨锡矿物捕收剂的制备方法,包括以下步骤:
(1)将10~30g十八胺加入到100~150ml体积浓度为10%-30%的叔丁醇溶液中,加热使其溶解,在常温中将其冷却至20℃-30℃;
(2)在步骤(1)得到的溶液中慢慢加入10-20g顺丙烯二酸一甲酯,在30℃保温1-2h,
(3)在步骤(2)得到的溶液中缓慢加入15~25ml25%亚叔丁醇钠溶液得到产物A。
(4)将10~30g丁烯二酸酐与10~30ml1mol/L盐酸配制成溶液并在冰浴中冷却至20℃;
(5)将步骤(4)所得溶液与步骤(3)所得产物A在pH8~10条件下偶合得到产物B;
(6)把步骤(5)所得产物B与磺化琥珀酰胺在pH10~12条件下偶合,得到黑色易溶于水的粉末,即为所述捕收剂。
本发明的另一技术方案是将上述方法所得钨锡矿物捕收剂在钨锡浮选中的应用。具体来说:浮选过程中,通过加入碳酸钠调节矿浆的pH,使矿浆pH值为9~10;加入水玻璃等脉石抑制剂搅拌5-10分钟后,再加入上述捕收剂进行浮选钨锡。所述捕收剂的用量为:200-400g/t(克/吨)。所述抑制剂是质量百分浓度为1~5%的水溶液。
本发明的具体优点在于:
1、采用本发明能够有效回收细粒钨锡,捕收能力强。
2、本发明药剂用量少,无毒无污染。
具体实施方式
以下通过具体实施例对本发明的技术方案作进一步描述。
实施例1
本发明所述钨锡矿物捕收剂的制备方法的一个实例,包括以下步骤:
将20g十八胺加入到120ml体积浓度为20%叔丁醇溶液中,加热使其溶解,常温冷确至30℃,在此温度下缓慢加入20g顺丙烯二酸一甲酯,在30℃保温1h,再加入15ml亚叔丁醇钠溶液得到产物A。
将20g丁烯二酸酐与20ml1mol/L盐酸配制成溶液并在冰浴中冷却至20℃,与产物A在pH9条件下偶合得到产物B,把产物B与磺化琥珀酰胺在pH10条件下偶合得黑色易溶于水的粉末即为所述捕收剂。
实施例2
本发明所述钨锡矿物捕收剂的制备方法的另一个实例,包括以下步骤:
将15g十八胺加入到120ml体积浓度为10%叔丁醇溶液中,加热使其溶解,常温冷却至20℃,在此温度下缓慢加入10g,顺丙烯二酸一甲酯,在30℃保温2h,再加入20ml亚叔丁醇钠溶液得到产物A。
将25g丁烯二酸酐与30ml1mol/L盐酸配制成溶液并在冰浴中冷却至20℃,与产物A在pH10条件下偶合得到产物B,把产物B与磺化琥珀酰胺在pH11条件下偶合得黑色易溶于水的粉末即为所述捕收剂。
实施例3
本实施例为所述钨锡矿物捕收剂在钨锡浮选中的应用实例。
1、矿物原料:
原料为钨矿,其中含钨1.24%,物相分析表明钨矿物中黑钨占43.25%、白钨占56.75%,脉石以石英、萤石、方解石为主,还有少量的绿泥石
2、药剂制度及操作条件:用碳酸钠调矿浆pH到9~10、抑制剂500g/t、捕收剂300g/t进行了一年100t/d(吨/天)工业扩大试验,结果表明采用以上药剂条件能够有效回收钨,得到钨精矿;在给矿品位钨1.24%条件下,经过一次粗选五次精选两次扫选,可以得到含钨为59.81%、回收率75.88%的钨精矿。所述药剂制度是指用药的种类与用量及方式。
实施例4
本实施例为所述钨锡矿物捕收剂在钨锡浮选中的另一应用实例。
1、矿物原料:
原料为锡矿,其中含锡1.31%,物相分析表明锡矿物以锡石为主,另有少量白钨矿;脉石主要为硅酸盐类、黄铁矿、磁黄铁矿。
2、药剂制度及操作条件:用碳酸钠调矿浆pH到8~9、抑制剂500g/t、捕收剂400g/t,进行了一年100t/d工业扩大试验,结果表明采用以上药剂条件能够有效回收锡石,得到锡精矿;在给矿品位锡条件下,经过一次粗选三次精选两次扫选,可以得到含锡为48.65%、回收率78.94%的锡精矿。
上述实施例对本发明的技术方案进行了详细说明。显然,本发明并不局限于所描述的实施例。基于本发明中的实施例,熟悉本技术领域的人员还可据此做出多种变化,但任何与本发明等同或相类似的变化都属于本发明保护的范围。
Claims (3)
1.一种钨锡矿物捕收剂的应用方法,其特征在于,所述捕收剂的制备包括以下步骤:
(1)将10~30g十八胺加入到100~150ml体积浓度为10%-30%的叔丁醇溶液中,加热使其溶解,在常温中将其冷却至30℃;
(2)在步骤(1)得到的溶液中加入10-20g顺丙烯二酸一甲酯,在30℃保温2h;
(3)在步骤(2)得到的溶液中加入15~25ml25%亚叔丁醇钠溶液得到产物A;
(4)将10~30g丁烯二酸酐与10~30ml 1mol/L盐酸配制成溶液并在冰浴中冷却至20℃;
(5)将步骤(4)所得溶液与步骤(3)所得产物A在pH8~10条件下偶合得到产物B;
(6)把步骤(5)所得产物B与磺化琥珀酰胺在pH10~12条件下偶合,得到黑色易溶于水的粉末,即为所述捕收剂;
在钨锡浮选过程中,通过加入碳酸钠调节矿浆的pH,使矿浆pH值为9~10;加入抑制剂搅拌5-10分钟后,再加入上述捕收剂进行浮选钨锡;所述抑制剂是脉石抑制剂。
2.根据权利要求1所述的应用方法,其特征在于,所述捕收剂的用量为:200-400g/t。
3.根据权利要求1所述的应用方法,其特征在于,所述抑制剂是质量百分浓度为1~5%的水溶液。
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CN101780381B (zh) * | 2009-10-31 | 2011-12-28 | 大庆卓越化工科技有限公司 | 一种n-烷基天冬氨酰胺表面活性剂及其制备方法 |
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