攀枝花钛铁矿浮选精矿脱药工艺及机理研究
发布时间：2018-12-29 10:19
【摘要】：我国拥有丰富的钛矿产资源,储量居世界之首,占世界的45%,但贫矿多、富矿少,平均品位偏低。钛铁矿的选矿技术在几十年间不断进步,目前钛铁矿的选别多用重-磁-浮联合流程,浮选法是其中的重要工艺。针对我国矿产资源贫、细、杂的特点,采用浮选工艺回收微细粒钛铁矿显得日益重要。目前,钛铁矿的浮选捕收剂主要为脂肪酸和螯合物类有机药剂。其中脂肪酸类捕收剂应用广泛且用量较大,一般为1000-4000g/t,因此,钛铁矿浮选精矿中常常吸附有大量捕收剂。我国攀枝花西部地区钛储量占全国的90.6%,在我国钛资源开发中具有重要的战略地位。攀枝花钛选厂所用浮选捕收剂M2用量较大,达3600-4000g/t。M2在矿物颗粒表面吸附牢固导致钛精矿中残留了大量药剂,在后续钛精矿的高温干燥过程中,残留药剂的燃烧及挥发造成生产过程及周边环境的恶化。鉴于此,在非高温条件下,对钛精矿浮选精矿进行脱药研究具有重要意义。本论文针对攀枝花钦选厂钛精矿浮选精矿,在分析精矿性质、药剂性质等的基础上,采用红外光谱、Zeta电位、紫外分光光度和X射线衍射等分析方法,对钛精矿脱药的工艺和理论进行了研究。利用紫外分光光度法对M2中主要成分油酸钠制定了分析方法,对钛铁矿浮选精矿进行了脱药条件及脱药工艺试验研究,对比分析了一次集中脱药和两段脱药两种工艺方案。一次集中脱药工艺采用两种药剂组合,即氢氧化钠(2000g/t)和硫酸铝(4000g/t)(或硫酸铁 4000g/t),TY-1(2000g/t)和硫酸铝(5000g/t)时,钛精矿脱药率为40.23%-44.29%;采用两段脱药工艺时,第一段采用氢氧化钠(2000g/t)和硫酸铁(2000g/t)组合脱药,第二段采用适量TY-1(2000g/t)和硫酸铝(3000g/t)组合脱药,钛精矿的脱药率为69.45%-71.24%。此外,对钛精矿的脱药机理进行了探索研究,初步得到了 M2与钛铁矿的作用机理和钦精矿的脱药机理。本研究对攀枝花选钛厂的钛精矿脱药具有一定的指导作用,同时,对大量以脂肪酸类为捕收剂的氧化矿精矿的脱药具有一定指导意义和参考价值。
[Abstract]:China has abundant titanium mineral resources and occupies the first place in the world, accounting for 45% of the world, but there are more poor ores, less rich minerals and lower average grade. The processing technology of ilmenite has been improving continuously in recent decades. At present, the separation of ilmenite is mainly used by the combined process of gravity, magnetism and flotation, among which flotation is an important process. In view of the characteristics of poor, fine and miscellaneous mineral resources in China, it is increasingly important to recover fine ilmenite by flotation process. At present, the flotation collector of ilmenite is mainly fatty acid and chelate organic reagent. The fatty acid collector is widely used and used widely, which is generally 1000-4000g / t. Therefore, a large amount of collector is often adsorbed in the flotation concentrate of ilmenite. The reserves of titanium in western Panzhihua occupy 90.6% of the total in China and play an important strategic role in the development of titanium resources in China. The amount of flotation collector M2 used in Panzhihua Titanium Concentrator is large, and the adsorption of 3600-4000g/t.M2 on the surface of mineral particles leads to the residue of a large number of reagents in the titanium concentrate, and in the drying process of the subsequent titanium concentrate at high temperature, Combustion and volatilization of residual chemicals cause deterioration of production process and surrounding environment. In view of this, it is of great significance to study the removal of titanium concentrate flotation concentrate under non-high temperature conditions. In this paper, the flotation concentrate of Panzhihua Qinshunchang Titanium concentrate was analyzed by infrared spectroscopy, Zeta potential, ultraviolet spectrophotometry and X-ray diffraction, on the basis of analyzing the properties of concentrate and reagent, etc. The technology and theory of detoxification of titanium concentrate were studied. The analytical method of sodium oleate, the main component of M2, was established by ultraviolet spectrophotometry. The condition and process of removal of ilmenite flotation concentrate were studied, and the two technological schemes of centralized and two-stage removal of ilmenite were compared and analyzed. When two kinds of medicament combination are used in the one time centralized detoxification process, that is, sodium hydroxide (2000g/t) and aluminum sulfate (4000g/t) (or ferric 4000g/t), TY-1 (2000g/t) and aluminum sulfate (5000g/t). The removal rate of titanium concentrate is 40.23- 44.29; In the two-stage detoxification process, sodium hydroxide (2000g/t) and ferric sulfate (2000g/t) were used in the first stage and appropriate amount of TY-1 (2000g/t) and aluminum sulfate (3000g/t) were used in the second stage. The removal rate of titanium concentrate is 69.45-71.24. In addition, the mechanism of removal of titanium concentrate was studied, the mechanism of action between M2 and ilmenite and the mechanism of removal of titanium concentrate were preliminarily obtained. This study has a certain guiding role for the removal of titanium concentrate from Panzhihua Titanium Concentrator, and also has certain guiding significance and reference value for a large number of oxidized ore concentrates with fatty acids as collector.
【学位授予单位】：昆明理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD951;TD923
[Abstract]:China has abundant titanium mineral resources and occupies the first place in the world, accounting for 45% of the world, but there are more poor ores, less rich minerals and lower average grade. The processing technology of ilmenite has been improving continuously in recent decades. At present, the separation of ilmenite is mainly used by the combined process of gravity, magnetism and flotation, among which flotation is an important process. In view of the characteristics of poor, fine and miscellaneous mineral resources in China, it is increasingly important to recover fine ilmenite by flotation process. At present, the flotation collector of ilmenite is mainly fatty acid and chelate organic reagent. The fatty acid collector is widely used and used widely, which is generally 1000-4000g / t. Therefore, a large amount of collector is often adsorbed in the flotation concentrate of ilmenite. The reserves of titanium in western Panzhihua occupy 90.6% of the total in China and play an important strategic role in the development of titanium resources in China. The amount of flotation collector M2 used in Panzhihua Titanium Concentrator is large, and the adsorption of 3600-4000g/t.M2 on the surface of mineral particles leads to the residue of a large number of reagents in the titanium concentrate, and in the drying process of the subsequent titanium concentrate at high temperature, Combustion and volatilization of residual chemicals cause deterioration of production process and surrounding environment. In view of this, it is of great significance to study the removal of titanium concentrate flotation concentrate under non-high temperature conditions. In this paper, the flotation concentrate of Panzhihua Qinshunchang Titanium concentrate was analyzed by infrared spectroscopy, Zeta potential, ultraviolet spectrophotometry and X-ray diffraction, on the basis of analyzing the properties of concentrate and reagent, etc. The technology and theory of detoxification of titanium concentrate were studied. The analytical method of sodium oleate, the main component of M2, was established by ultraviolet spectrophotometry. The condition and process of removal of ilmenite flotation concentrate were studied, and the two technological schemes of centralized and two-stage removal of ilmenite were compared and analyzed. When two kinds of medicament combination are used in the one time centralized detoxification process, that is, sodium hydroxide (2000g/t) and aluminum sulfate (4000g/t) (or ferric 4000g/t), TY-1 (2000g/t) and aluminum sulfate (5000g/t). The removal rate of titanium concentrate is 40.23- 44.29; In the two-stage detoxification process, sodium hydroxide (2000g/t) and ferric sulfate (2000g/t) were used in the first stage and appropriate amount of TY-1 (2000g/t) and aluminum sulfate (3000g/t) were used in the second stage. The removal rate of titanium concentrate is 69.45-71.24. In addition, the mechanism of removal of titanium concentrate was studied, the mechanism of action between M2 and ilmenite and the mechanism of removal of titanium concentrate were preliminarily obtained. This study has a certain guiding role for the removal of titanium concentrate from Panzhihua Titanium Concentrator, and also has certain guiding significance and reference value for a large number of oxidized ore concentrates with fatty acids as collector.
【学位授予单位】：昆明理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD951;TD923
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