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Low-selenium preparation of new manganese oxide method


7371.980.03335.671.22 No. 8000.07199.7370.930.001996.213.03 No. 9000.07199.7371.000.001197.893.4 (the transfer p. 64) Mining and Metallurgical Engineering Volume 24 Table 7 1t ferrite powder production of raw materials required for the major 4 Conclusions 1) The industrial test to achieve the desired objective, test data can be used as 5000t / a production line of the design basis. 2) iron, manganese, zinc and total recovery (%), respectively: Fe93.27, Mn93.35, Zn84.01. 3) industrial test the quality of co-precipitation powder better than the expansion of test results, the ratio is very close to the theoretical value , low impurity elements,Beats By Dre Studio, especially si0 'content by less than 0.0050%, Japan's TDK to the requirements of high-grade iron oxide red. 4) The industrial test large quantities of powder prepared by co-precipitation of ferrite magnetic powder with all the PC30 standard part of the meet PC40 requirements. 5) co-precipitation mother liquor recycling (NH,radii shoes sale,): 504, to solve the water pollution problem, the process is a clean production process. References: [1] Zhang Jisong, Wang Yanming. Ferrite materials present situation and development prospects [c]. National High-tech magnetic devices and special equipment, proceedings, 2001:55. [2] Wang Huizong. Status and development of ferrite [c]. National High-tech magnetic devices and special equipment, proceedings, 2001:15. [3] Chen Guohua. 2l century ferrite materials and components development trends [J]. Magnetic materials and devices, 2001,32 (40) :34-36. [4] Wen Caiyun. Ferrite Powder, Jiangsu Ceramics, 2000 (4): 2l-22. [5] Yao Lihua. Legal I-Zn ferrite oxide pellets [J]. Magnetic materials and devices, 1999 (2) :39-43. [6] Limbaugh. Preparation of ferrite co-precipitation and its application [J]. Magnetic materials and devices, 1983,14 (2) :26-29. [7] Li Ziqiang, Li. Mn-Zn ferrite soft magnetic material developed by co-precipitation powder [J]. Sichuan Union University (Engineering Science Edition), 1997,1 (5) :23-29. [8] TANG Mo-tang, Huang Xiaozhong,tory burch outlet, Ouyang, et al. Preparation of magnetic material of one kind of new method [P]. China Patent, zIl0 ∞ 00.1995. [9] Huang Xiaozhong, TANG Mo-tang. From the manganese ore, iron sphalerite and Mn-Zn ferrite system to take direct materials, new technology research [J]. China Manganese, 1996,14 (1) :42-45. [10] TANG Mo-tang, Huang Xiaozhong, YANG Sheng-hai, et al. Preparation of a direct expansion of low-power ferrite Research [A]. Eleventh National Science Magnetism and Magnetic Materials Conference Proceedings [c]. Changsha, 2O02 ,10:381-384. [11] TANG Mo-tang, YANG Sheng-hai, Peng Changhong, and so on. Sulfate system than the depth of the metal ion solution purification method [P]. CN03124708.3. (Continued from page 60) Table 3 shows the results of the calcination product oxidation system were consistent with Mn amount and Mn3o4, when the calcination temperature above 800 ℃, can be satisfied with the removal rate of Se, but the low surface area product,######## oakley sunglasses, to test products from x-diffraction analysis (see Figure 1), its pattern consistent with Mn3o4 standard map, proven to Mn3o4. ∞ 20-/ (.) 1 test product XRD3 conclusion 1) the Se film manganese removal more difficult, but Mno4 properly in the Se heat treatment may be removal of the majority. 2) manganese oxide powder can be prepared baking low selenium Mno4, this method of removal rate of up to 97% of Se, Se can be controlled with products Mno4 at 0.02%. Or less. 3) manganese oxide powder prepared by roasting the Mno4 low surface area, pending further research to improve product quality. References: [1] Chen Zhong. Manganese Manganese Oxide Analysis of quality [J]. China Manganese, 1998,16 (2) :28-31. [2] weeks so that governance. Rare metal metallurgy [M]. Beijing: Metallurgical Industry Press, 1988.13jhttp: / / www. mn1c. co. zalEB / OLj. [4] Tang Xiao Zhuang. Preparation of manganese powder with wet manganese oxide theory and practice [J]. China Manganese, 1997,15 (1) :42-45. [5] Pan diameter. Manganese oxide preparation methods and prospects [J]. China Manganese,mbt cipő, 1998.16 (3): 5l-55.
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