DEPOSIT Huogeqi metal is copper polymetallic deposit mainly large, mainly mined Cu -5, Cu -6 ore, chalcopyrite ore genus - pyrrhotite type, the complex nature of the ore, sulfur and iron content Higher, pyrrhotite floatability is similar to chalcopyrite, resulting in difficulty in separation of copper and sulfur, and the ore dressing index fluctuates greatly, especially in the Cu26 ore body. The copper concentrate grade is 7% to 20%, and the recovery rate is 60% to 88%, which seriously affects the operation effect of the mine. After changing the flotation process, the selection index has not been significantly improved. After adopting the "low-oil, high-liquid, anti-dosing" hunger administration method, the effective enrichment of the target mineral could not be achieved. In 1998, the Qiqi Copper Mine and the Science and Technology Department of Zhongtiaoshan Nonferrous Metals Co., Ltd. cooperated to carry out a special study to improve the ore selection index of the mine. The test proves that DY-1 has strong adaptability in combination with butyl xanthate and 2 # oil. The concentrate grade and recovery rate are increased by 1.005%~1.229% and 3.42%~5.56%, respectively. The annual efficiency is nearly 4 million yuan. . The mines that have lost money for a long time are now alive. First, the nature of the ore The various copper deposits are the polymetallic deposits of sedimentary metamorphism, and the ore bodies are layered and layered. Cu - 5, Cu - 6 ORES type chalcopyrite - pyrrhotite, mainly containing tremolite rock rock ore, followed by a carbonaceous quartzite tremolite and diopside quartz rock, metal minerals They are: pyrrhotite, chalcopyrite, pyrite secondly, magnetite, and a small amount of side chalcopyrite, galena, sphalerite, arsenopyrite and the like. The gangue minerals are mainly quartz, tremolite, and diopside , followed by actinolite, mica , and garnet. The ore is mainly in the form of disseminated structure, followed by veins and clumps. The chalcopyrite is formed by his granular aggregates along the quartz and tremolite particles. The chalcopyrite and the pyrrhotite are closely symbiotic. Fine, particle size is less than 0.10 ~ 0.02mm, quartz is his granular aggregate, tremolite, diopside is a coarse aggregate. Table 1 Multi-element analysis of raw ore Table 2 copper phase analysis% Such ore is complex in structure, high in sulfur-containing iron, and high in atomic ratio (S/Fe), which increases the floatability of pyrrhotite; and copper ions produced by copper sulfate dissolved in water can partially The activation of non-recovered metals makes it difficult to separate copper, iron and sulfur. Moreover, the Cu - 6 ore body has a high carbon content. Because of its small specific gravity and strong hydrophobicity, it is easily adsorbed on the surface of the foam during the sorting process, which competes with the useful minerals for adsorption and interferes with the sorting process, thus seriously affecting the sorting effect. . The ore is a complex refractory ore. Second, mineral processing test research This test is more difficult mainly for the election of Cu - 6 ore ore body both Cu - ore ore body were 5 optional study. The focus of the research is how to solve the problem of flotation separation of chalcopyrite and pyrrhotite, and how to suppress the floating of carbon. In order to increase the floatability difference between pyrrhotite and chalcopyrite, the collector DY-1 with strong selectivity and certain foaming property and the foaming agent pyridine with certain trapping effect were selected. At the same time, in order to effectively inhibit carbonaceous gangue, iron chromium salt lignin and dextrin test were carried out. The results show that although pyridine has a certain ability to capture, and the price is cheap, because of its high foam viscosity and poor selection index, it is not suitable for the sorting of such complex ore. After using dextrin, the foam mineralization is not good enough to be used. In contrast, DY-1 and iron chromium salt lignin are better. (1) New drug condition test 1, DY-1 test The effect of DY-1 on the coarse selection index of copper is shown in Fig. 1. The fineness of grinding is -0.074mm, 68%, lime is 10kg/t, and xanthate is 40g/t. The result shows that the suitable dosage of DY-1 is 60g/t. Figure 1 Effect of DY-1 on copper rough selection index 2, lime dosage test The effect of the amount of lime on the coarse selection index is shown in Fig. 2, the amount of DY-1 is 60g/t, and the amount of yellow is 20g/t. The results showed that the amount of lime was 6 kg/t. Figure 2 Effect of lime dosage on rough selection index 3. Yellow medicinal amount test The effect of yellow medicinal amount on the sorting effect is shown in Fig. 3, lime 6kg/t, DY-160g/t. The results showed that the yellow medicinal amount was 20 g/t. It can be seen from the figure that when DY-1 is added alone, the recovery rate is low, and when DY-1 is synergistic with a small amount of xanthate, the sorting effect is better. However, as the amount of xanthine increases, the selection effect deteriorates. It shows that DY-1 can replace the foaming performance of 2 # oil, but it can not completely replace the collecting property of xanthate. Figure 3 Effect of yellow medicinal amount on sorting effect When DY-1 synergizes with a small amount of xanthate, the selection effect is better. However, as the amount of xanthine increases, the selection effect deteriorates. It shows that DY-1 can replace the foaming performance of 2 # oil, but it can not completely replace the collecting property of xanthate. 4, iron chromium salt lignin dosage test The iron chromium salt lignin is suitably added to the selected one, and the amount is preferably 33 g/t. (2) Comparative test The results of the comparison between the new pharmaceutical system and the on-site pharmaceutical system are shown in Table 3. Table 3 Comparison of new drug system and on-site pharmaceutical system The open-circuit comparison test showed that the test results under the new prescription conditions were 5.89% and 7.01% higher than the concentrate grade and recovery rate under the field conditions. Moreover, when DY-1 is selected, the foaming speed is fast, the foam is clean, not sticky, and the degree of mineralization is good, which can increase the floating difference between the pyrrhotite and the chalcopyrite. (3) Closed circuit test On the basis of the open circuit conditions, a closed circuit test was carried out on the Cu - 6 and Cu - 5 ore bodies using a rough three-precision three-sweep process. The results are shown in Table 4. Table 4 % of closed circuit test results It can be seen from the above table that the new pharmaceutical conditions have strong adaptability to this type of ore. Third, industrial trials According to small-scale test results in Huogeqi Naren copper processing plant mainly for Cu - 6 ore body ore industrial test. The processing capacity of Naren Plant is 150t, and the grinding is a single series. The flotation process is a coarse and two fine three sweeps. The test results are shown in Table 5. Table 5 Comparison of industrial test indicators and original indicators indicator anaysis: (1) Compared with the same ore in the same period, the grades and recovery rates of the concentrates increased by 11229% and 5156%, respectively, with an obvious increase. (2) After using DY-1, the color of the rough-selected foam is obviously changed from yellow-gray to yellow, the foam is clean and mineralized, the foaming speed is fast, the viscosity is small, the liquid surface is stable, easy to operate, and the production index is improved and intuitive. After the industrial test, an industrial extension test was conducted at the Qiqi Copper Mine Grand Selection Plant. The grinding plant of the large selection plant is divided into two series, of which the daily processing capacity of the I series is 500t, and the flotation adopts a rough three rough and three sweeping process. The daily processing capacity of the II series is 1000t, and the flotation process is two coarse and three fine three sweeps. This promotion test is based on Cu - 5 ore in the I series for new drug testing, and the II series is a comparison series. The test results are shown in Table 6. Table 6 Comparison index of industrial promotion test It can be seen from the above table that the copper concentrate grade and recovery rate are improved by 1.1005% and 3.42%, respectively, compared with the comparison series, and the effect is remarkable. It is indicated that the pharmaceutical system is not only suitable for the selection of Cu - 6 ore ore, but also for the selection of Cu - 5 ore. In the test, the degree of foam mineralization is good, the liquid level is stable, the new pharmaceutical system has a wide adaptability to pH value, the index fluctuation is small, and the operation is simple. The best pharmaceutical conditions for selecting Cu - 6 ore are: Rough selection: DY-1 48～64g/t Sweep: xanthate 5 ~ 7.5g / t Second sweep: xanthate 15 ~ 20g / t 2 #油32～48g/t Second fine: lignin 30 ~ 35g / t The best pharmaceutical conditions for selecting Cu - 5 ore are: Rough selection: DY-1 27.4~41.1g/t Second sweep: xanthate 31.4 ~ 37.1g / t 2 #油11.4～20.6g/t Fourth, the conclusion 1. Due to the complex nature of the ore and the difficulty in sorting minerals, effective separation and enrichment of minerals can only be achieved by using highly selective collectors. DY-1 is suitable for this condition, not only has foaming property, but also has fast foaming speed, clean foam, good mineralization and stable liquid surface. It can effectively improve the selection with a small amount of xanthate and 2 # oil. The index, after the promotion and application of the mine, has an annual efficiency increase of nearly 4 million yuan. 2, iron chromium salt lignin is effective for carbonaceous gangue In the preparation, the amount of carbon in the ore can be added according to the amount of carbon in the ore to improve the quality of the concentrate. 3. In the test process of Naren Plant, the original and tailings were sieved, and the easy-floating level of 01074mm or less in the original ore only accounted for 50.14%, while in general, the grinding fineness of -0.074mm should reach 60%~ 65%, indicating that the grinding particle size is too coarse. The amount of metal lost in the tailings from -120 to +200 mesh accounted for 60.91%, indicating that the metal was mainly lost in the form of continuous organisms. This indicates that DY-1 has a strong collection property for monomeric copper minerals, and the capture property of copper minerals is relatively weak. Therefore, the industrial conditions are slightly adjusted in the industrial test, and the second sweep is selected. Add appropriate amount of 2 # oil to increase the ability to capture copper minerals. 4. DY-1 is more conducive to improving the concentrate grade, but considering that the benefit of the recovery rate is far greater than the benefit of the upgrade of the concentrate grade, the leading idea of ​​this industrial test is to improve the quality of the concentrate by 20%. Recovery rate. 5. The indicators obtained by the new pharmaceutical system are stable and reliable, and have good adaptability to the ore copper ore. Road Bike,Bicycle Folding Tire,Mountain Bicycle Tyres,High Quality Bicycle Tyre HEBEI HONGYANG TIRE CO.,LTD , https://www.hongyangtyre.com