Latest developments in flotation reagents
In 2009, research on flotation reagents mainly included the development of new collectors and inhibitors, the investigation of flotation performance, the application of composite or mixed medicaments, and the analysis of the mechanism of action of pharmaceuticals. The research methods and means were also perfected. At the same time, adjusting or optimizing the flotation reagent program plays an increasingly important role in improving the sorting technical indicators. First, the collector Huang Qimao and other raw materials for the production of industrial rapeseed oil were used as raw materials to synthesize a new amino acid flotation collector by saponification, acid hydrolysis, chlorination and amination, and used it in a medium and low level in Yunnan. Refractory grade phosphate rock flotation production, as compared with conventional fatty acid composition phosphate collector, this amino acid type water-soluble only in collector and flotation performance are significantly improved, but also has good Low temperature flotation performance. In view of the fact that the gold- bearing minerals of a certain gold ore are relatively dispersed and the size of the gold-embedded cloth is fine, Liu Wen et al. conducted a study on enhanced flotation using a new MAC-12 collector. The results show that MAC-12 is a high-efficiency collector of gold. Under the condition of pH=9, the recovery rate of gold is 5.41% higher than that of butylamine black medicine. The gold grade of concentrate is improved. 18.74 g/t. Finn et coke using butyl xanthate, 680, and Mac-10 as a collector, under different conditions of brass mineral, flotation of pyrite ore and separating effect of the actual tests conducted comparison study. The results show that Mac-10 has good application potential in the separation of copper and sulfur flotation. The harvesting ability is better than that of Dinghuang and 680, and the selectivity is good. It can be used in neutral or weak base with less dosage. Under the condition of conditions, the effective separation of chalcopyrite and pyrite is realized. Li Xianyuan et al. used MB and MOS-2 mixed collectors instead of isobutyl xanthate to conduct laboratory tests and research on the actual situation of copper flotation recovery due to changes in properties of Tonglushan. Industrial test. The results showed that, compared with isobutyl xanthate, MB mixed with MOS-2 can collector of copper, gold and silver recovery of copper concentrate beneficiation plant were increased 0.49,3.62 and 3.47 percentage points, while Can reduce the amount of oil No. 2 by more than 40%. Experimental study on optimization of the flotation reagent regime Interfax mixed lead-zinc ore plant dam lead zinc mine were. When lead is used, sodium sulfide is used to activate lead oxide, and high-efficiency collector D421 is used to enhance lead flotation. Adding water glass and MP-inhibiting silica during zinc selection can increase the lead grade of lead concentrate from 48.90% to 54.63%, the zinc content decreased from 12.19% to 10.12%, the lead recovery rate increased from 72.85% to 76.20%, and the zinc recovery rate in zinc concentrate increased from 76.95% to 79.07%. Chen Yuping used the MA collector to conduct flotation experiments on the ore of the Mengzi Bainiuchang lead-zinc mine in Yunnan. The results show that with the combination of MA and ethyl sulphide, the laboratory can obtain lead concentrate with lead content of 47.62%, zinc content of 4.02%, lead recovery rate of 82.28%, and zinc content of 42.45% and lead content of 0.89%. Zinc concentrate with a zinc recovery rate of 89.05%; the technical index for industrial application shows that the use of MA and ethyl sulphur and nitrogen mixed collectors makes lead concentrate compared with the use of butyl xanthate and ethyl sulphide mixed collectors. The lead grade and lead recovery rate of the mine increased by 3.81 and 7.7 percentage points respectively, and the zinc grade and zinc recovery rate of the zinc ore mine increased by 2.09 and 4.24 percentage points respectively. It can be seen that the use of the new medicament has achieved remarkable results. Gao Bainian et al. used a high-efficiency collector A2 and butyl xanthate to conduct a flotation separation test on a refractory copper ore in Subei. The results show that when the ore is ground to 75%-0.074mm, lime and ammonium sulfate are used as the adjusting agent, A2 and butyl xanthate are used as the collector, and one rough selection, one sweep, and two selections. Finally, a copper concentrate with a copper grade of 20.98% and a copper recovery of 85.09% was obtained. Sun Wei et al. studied the capture performance of the new chelation agent F-305 on wolframite and scheelite by single mineral test and actual ore test. The results show that compared with the conventional tungsten mineral flotation collector 733 oxidized wax, F-305 has a strong ability to capture tungsten toughness, especially for wolframite, and can be satisfied at room temperature. Flotation indicator. Liu Wengang et al. studied the capture performance of N-dodecyl-1,3-propanediamine on quartz , hematite, calcite , smithsonite and magnesite by flotation experiments, and captured with dodecylamine. The performance was compared. It has been found that N-dodecyl-1,3-propanediamine has a stronger trapping performance for quartz than dodecylamine. In a wide pH range, the recovery rate of quartz is more than 90%. ; hematite collectors ability dodecylamine or less; COLLECTING calcite significantly worse than dodecylamine, while calamine and magnesite ore is substantially free of collecting capability. Yu Xinyang new applications developed collector QAS-224, grade Al 2 0 3 of 64%, a silicon aluminum reverse flotation desilication bauxite ore than a certain test Henan 6.1. The results show that under the conditions of grinding fineness of 81.24%-0.074 mm and pulp pH=11, the crude oil Al 2 0 3 grade 67.79% is obtained by one rough selection, two selections and two sweeps. The aluminum-silicon ratio is 9.67, and the Al 2 0 3 recovery rate is 81.72%. Cheng Pingping investigated the reverse flotation separation effect of diaspore and kaolinite with quaternary ammonium salt QAX224 force collector and starch as inhibitor. The test showed that at pH=8～9, with inhibition The amount of agent increased, almost all of the diaspore; the reverse flotation separation of the artificial mixed ore of diaspore and kaolinite can increase the aluminum-to-silicon ratio of the concentrate to 30.79; And the results of infrared spectroscopy, the researchers believe that in addition to physical effects between collectors and inhibitors and kaolinite, chemical bonding occurs, while diaspore and collector and starch Electrostatically attached chemical adsorption is the main one. Liu Changjun et al. studied the trapping potential of quartz for four kinds of dodecaamines (DRN, DEN, DPN and DBN). The results show that DRN, DEN and DPN have good flotation performance for quartz, and the recovery rate can reach more than 90%, while the recovery rate obtained by using DBN is lower. It is found by infrared spectrum and potentiodynamic measurement that the surface of quartz is Hydroxyl ionization is the main reason for the surface charge. The mechanism of action of the four tertiary amines on the surface of quartz is mainly electrostatic. The dynamic potential of quartz increases significantly after the action of four tertiary amines, which leads to the difference in flotation ability of four tertiary amines. The intrinsic reason is the electronic and spatial effects of the substituents attached to the nitrogen atom. Gu Yuhua et al. investigated the effect of DLZ collector on the flotation performance of chalcopyrite and pyrite by flotation test, adsorption amount and infrared spectroscopy. The results show that DLZ is yellow at pH=2.7~12.05. The copper mine has a strong ability to capture and has a weak ability to capture pyrite. When using Cao as the pH adjustment, the recovery rate of chalcopyrite is not much different from that of NaOH as pH adjuster at pH=7-11. pyrite is strongly suppressed, which sorting flotation recovery less than 5%; under alkaline conditions, the ratio of DLZ brass boron adsorbed on the mineral pyrite is substantially greater; IR spectrum measurement result It is indicated that the DLZ correlation characteristics and peaks appear after the action of chalcopyrite and DLZ, while the infrared spectra of pyrite and DLZ and Cu 2+ do not change before, so the adsorption of DLZ on the surface of chalcopyrite is chemical adsorption. And its adsorption on the surface of pyrite belongs to physical adsorption. Its adsorption on the surface of pyrite is a physical adsorption. Second, the inhibitor Under the condition of pH=8, Zhou Yuan, Zeng Juan, etc. studied Na 2 S 2 O 3 + pyrogallic acid, NaCl0 + pyrogallic acid, CaCl 2 + tannic acid, KMn04 + tannic acid, NaCl 0 + humic acid The effect of five combined inhibitors of sodium on the floatability of chalcopyrite and pyrite. The results show that they can be used as inhibitors of pyrite in copper and sulfur flotation separation, but there are some differences in selectivity and dosage. NaCl0+sodium humate is a high-efficiency inhibitor of pyrite. Successfully achieved copper and sulfur separation and obtained better technical indicators. Long Qirong et al. systematically studied the effect of molecular structure on the performance of organic inhibitors. The results show that the functional groups with strong polar groups such as hydroxyl group, carboxyl group and amine group in the molecular structure are not enough to inhibit the sulfide minerals. The chelation of the combination of two polar functional groups can not strengthen the vulcanization of organic inhibitors. The inhibition of the minerals, while the weaker sulfhydryl groups have a good inhibition of the iron sphalerite; when the benzene ring is present in the molecular structure, the inhibition of the sulfide minerals by the organic compounds is enhanced, and the functional groups are not obvious. Based on the above results, the molecular selection and design basis of lead-zinc sulfide ore inhibitors were proposed. Long autumn Yung et also using new organic GZT inhibitor developed by Guangxi University, lead-antimony concentrate for long slope concentrator was reduced impurity content, improve lead-antimony concentrate grade of laboratory tests and industrial test. The results show that GZT is a very effective selective flotation inhibitor for sulfide ore flotation. It is used in industrial production to increase the lead + antimony grade of lead-salt ore in Changpo Separation Plant by 9.61 percentage points and the zinc content by 2.97. Percentage points, the recovery rates of lead and antimony increased by 4.75 and 4.19 percentage points respectively. Yang Yaohui and other systematically studied the inhibitory effect of high-efficiency combination inhibitor D1 on tungsten minerals and calcium-containing minerals. The results show that D1 can effectively inhibit fluorite and calcite, but has little effect on the floatability of scheelite and wolframite. D1 can be used to obtain a W0 3 by rough selection of a scheelite. A tungsten concentrate with a grade of 4.56% and a recovery rate of 82.34%. Third, other flotation agents In view of the complicated foaming agent composition, unstable quality, easy foaming in rough selection, and too sticky foam in the selected operation, Zhongduncheng Molybdenum Co., Ltd. adopted the new JM-208 foaming agent. Laboratory tests and industrial tests on the ore have been carried out. The results show that the use of JM-208 instead of the foaming agent for the alcohol can effectively solve the problem of sticky foam in the selected operation of molybdenum flotation process and significantly improve the economics of mineral processing technology. index. Aiming at the high mud content, high oxidation rate and fine grain size of copper oxide in Xinjiang, a certain copper oxide ore in Xinjiang is used in the flotation test to combine the high-efficiency activator DZ-602 with sodium sulfide to increase The hydrophobicity of the surface of copper oxide minerals has achieved an ideal sorting effect. The closed-circuit test obtained the sorting technical index of 17.13% copper concentrate grade, 1822g/t silver and 69.21% copper recovery rate. Peng Huiqing and others used a selective flocculation and reverse flotation process to conduct experimental research on a difficult ore hematite ore. Through the conditional test and orthogonal test, the effects of various chemicals on the desliming technical indicators were systematically investigated. Finally, the iron concentrate grade was increased from 47.85% to 54.63%, and the iron recovery rate reached 82.49%. Amphibious Excavator With Side Pontoons And Spuds Used Swamp Buggy,Side Pontoons Amphibious Excavator,Amphibious Excavator With Spuds,Amphibious Excavator With Side Pontoons And Spuds Binzhou Jinyi Equipment Co.,Ltd , https://www.jyexcavator.com