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Method for preparing manganese sulfate electrolyte by using high iron and high phosphorus manganese ore

A technology of high iron and high phosphorus manganese ore and manganese sulfate, which is applied in the direction of photography technology, instruments, photography auxiliary technology, etc. It can reduce the burden of purification, reduce the price, and reduce the environmental pollution.

Inactive Publication Date: 2016-06-01
CENT SOUTH UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] High-iron and high-phosphorus manganese ore is a typical complex manganese ore with high impurity content and difficult treatment. On the one hand, it cannot be produced by fire method because of its large amount of phosphorus. On the other hand, when this manganese ore is used as raw material, When the existing hydrometallurgical technology produces manganese salt series products, due to the need to use a large amount of sulfuric acid in sulfuric acid leaching, the manganese leaching slag is acidic and cannot be discharged, and the leakage of acid-containing waste liquid from enterprises has caused serious pollution to soil and groundwater resources. At the same time, there is a large amount of iron in the ore, which increases the burden of solution purification and affects product quality. Therefore, with the existing manganese ore hydrometallurgical technology, manganese processing enterprises are reluctant to use this type of ore raw material. At the same time, this type of manganese ore also not effectively utilized

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  • Method for preparing manganese sulfate electrolyte by using high iron and high phosphorus manganese ore
  • Method for preparing manganese sulfate electrolyte by using high iron and high phosphorus manganese ore

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Put the high-iron high-phosphorus manganese ore and pyrite into the ball mill respectively. The speed of the ball mill is 350r / min, and the ball milling time is 2 hours. Because the ground ore powder is mixed and roasted in a self-made furnace with false bottom ventilation , so if the particle size of the ground ore powder is too large, the contact area of ​​the two ores will be reduced and cannot be fully mixed. If the particle size of the ground ore powder is too small, it will be taken away by the air flow and the roasting cannot be completed. The obtained mineral powder has a particle size of 150 mesh. The high-iron, high-phosphorus manganese ore powder and pyrite powder were mixed at a molar ratio of 1:1.5, and roasted at a constant temperature using a self-made blast furnace with a false bottom as the roasting equipment. The roasting temperature was 560°C and the roasting time was 3 hours. Add the roasted clinker into clear water to leaching the ore in a mass rati...

Embodiment 2

[0028]Put the high-iron high-phosphorus manganese ore and pyrite into a ball mill respectively, the rotating speed of the ball mill is 350r / min, the ball milling time is 2 hours, and sieve to obtain mineral powder with a particle size of 200 mesh. The high-iron, high-phosphorus manganese ore powder and pyrite powder were mixed at a molar ratio of 1:1.8, and roasted at a constant temperature using a self-made blast furnace with a false bottom as the roasting equipment. The roasting temperature was 600°C and the roasting time was 3.5 hours. Add the roasted clinker to clean water to leaching the ore in a mass ratio of 1:6, and keep stirring. After 3.5 hours of leaching, the leach solution was analyzed for all elements. The leach solution was manganese sulfate leach solution containing impurities, and the leaching rate of manganese was 89.3%. Then, the manganese sulfate leach solution was pretreated, and 9 g of barium sulfide was added per liter of leach solution, and continued to ...

Embodiment 3

[0030] Put the high-iron high-phosphorus manganese ore and pyrite into a ball mill respectively, the rotating speed of the ball mill is 350r / min, the ball milling time is 2 hours, and sieve to obtain mineral powder with a particle size of 250 mesh. The high-iron, high-phosphorus manganese ore powder and pyrite powder were mixed at a molar ratio of 1:2.5, and roasted at a constant temperature using a self-made blast furnace with a false bottom as the roasting equipment. The roasting temperature was 620°C and the roasting time was 4 hours. Add the roasted clinker into clear water to leaching the ore in a mass ratio of 1:7, and keep stirring. After 4 hours of leaching, the leach solution was analyzed for all elements. The leach solution was manganese sulfate leach solution containing impurities, and the leaching rate of manganese was 87.7%. Then, the manganese sulfate leach solution was pretreated, and 10 g of barium sulfide was added per liter of leach solution, and continued to ...

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Abstract

The invention relates to a method for preparing a manganese sulfate electrolyte by using high-iron and high-phosphor manganese ores. The method comprises the following steps of: separately ball-milling the high-iron and high-phosphor manganese ores and iron pyrites in a ball mill to form powders, mixing the powders in proportion and roasting in a self-manufactured roasting device, leaching the manganese ores subjected to sulfating roasting by taking water as a leaching agent to obtain a manganese sulfate solution, and removing impurities from the manganese sulfate solution to obtain a qualified manganese sulfate electrolyte. As the water is taken as the leaching agent in the method, the iron and phosphor can be effectively prevented from being leached while the extraction ratio of manganese is increased, the impurities are prevented from entering the solution, so that the quality of subsequent products is improved, the burden of purifying the manganese sulfate solution in subsequent operations is greatly alleviated, and the quality of the manganese sulfate solution is improved; and the method has the advantages of solving the problem that manganese sulfate solution production enterprises depend on scarce manganese carbonate ores, greatly reducing the pollution to the environment while reducing the production cost; therefore, the method is suitable for development and application of low-grade high-iron and high-phosphor manganese ores.

Description

technical field [0001] The invention relates to a method for preparing a manganese sulfate electrolyte, in particular to a method for preparing a manganese sulfate electrolyte by using high-iron and high-phosphorus manganese ore as raw materials through green hydrometallurgy. Background technique [0002] Manganese is an important strategic resource, and manganese products are widely used in the fields of steel, electronics, light industry, chemical industry, agriculture and national defense. Natural manganese ore with industrial application value mainly includes manganese oxide ore and manganese carbonate ore. According to the different grades and impurity content of manganese ore, there are currently two domestic and international methods for deep processing: one is for harmful impurities (such as phosphorus , sulfur) low-rich ores can be directly produced by pyrometallurgical technology to produce manganese alloy products or used as battery manganese powder; second, for m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25C1/10C22B3/04C22B1/06
Inventor 袁明亮李康宋聪明宪权詹海青黎贵亮陈南雄黄冠汉邓永光黎建新
Owner CENT SOUTH UNIV
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