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Liquid making technique for manganese oxide ore

A manganese oxide ore and process technology, applied in the field of manganese smelting, can solve problems such as failure to reach the technical level of electrolytic metal manganese, and achieve the effects of reduced quantity, reduced labor intensity, and increased output

Inactive Publication Date: 2010-03-31
熊一言
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Afterwards, many enterprises successively tried to use manganese oxide ore to produce electrolytic manganese metal without roasting. At present, the liquid production process of manganese oxide ore in the manganese smelting industry is to add sulfuric acid or anolyte, manganese oxide ore, pyrite and other reducing agents into the leaching tank. After the neutralization is completed, the neutralization solution is purified and sent to the electrolysis process, but all fail or fail to reach the technical level of using manganese carbonate to produce electrolytic metal manganese. The key problem lies in the quality of the solution produced by manganese oxide ore

Method used

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  • Liquid making technique for manganese oxide ore

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The weight ratio of manganese oxide powder, pyrite powder and sulfuric acid is 1:0.213:0.36

[0016] 1) Pour about one-third of the volume of anolyte into the leaching tank and stir at the same time. The effective volume of the leaching tank is 180m 3 , the anolyte contains 12.6g / l of manganese and 32.68g / l of sulfuric acid. It has been preheated to about 80°C, and then 6.072 tons of sulfuric acid is injected, and then 31 tons of manganese oxide ore powder with a grade of 17% is injected, and part of the anode is injected at the same time. liquid and start to heat up, and then put in 6.613 tons of pyrite powder with a sulfur content of 32%. Sulfuric acid 3g / l, stop heating, and cool the bath to about 75-80°C.

[0017] 2), add 10% ammoniacal liquor to the above-mentioned solution that has reached the end of the reaction for neutralization, the process temperature is controlled at 80°C, react until the pH value is 6.03, filter and discard the filter residue, and obtain a...

Embodiment 2

[0022] This embodiment is basically the same as Example 1, the difference is that step 3) is changed to: put the crude manganese sulfate solution obtained in step 2) into the next-stage purification tank with the same volume as the leaching tank, and stir simultaneously, and add Ammonium sulfate to 130g / l, pH value at 6.0, after fully dissolving, add 120kg of barium sulfide, process temperature is controlled at 75-80°C, reaction time is 2 hours, pH value is at 6.3, after filtering, add potassium permanganate 10kg, After 1 hour, add sodium thiram until the nickel removal is qualified, and then filter to obtain a coarse-step purified manganese sulfate solution.

Embodiment 3

[0024] Present embodiment and embodiment 1 technological conditions are the same, but a kind of liquid preparation of continuous leaching, purification, the leaching tank that uses is to be 180m by five effective volumes 3 Each leaching tank is connected in series to form a three-stage continuous leaching. The last two purification tanks are used for neutralization. The qualified neutralization liquid enters the first purification tank continuously after being filtered. The purification tank used is composed of seven effective volumes 180m 3 Each purification tank is connected in series to form a seven-level continuous purification, in which there is a filtration facility between the third purification tank and the fourth purification tank, and there is also a filter between the fifth purification tank and the sixth purification tank After the solution slips out of the last tank, it is filtered and sent to the electrolysis process.

[0025] Manganese oxide ore powder contains...

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Abstract

The invention discloses a liquid making technique for manganese oxide ore, comprising the steps of: adding the manganese oxide ore powder, pyrite powder, sulfuric acid solution into a leaching vat forleaching; adding a neutralizing agent for neutralizing after reaching leaching termination; adding ammonia sulfate, potassium permanganate and sodium dimethyldithiocarbamate into the neutralization liquid after filtration until the nickel is qualitatively removed; then, adding barium sulfide or adding barium sulfide into the filtrate after filtration, wherein the dosage of barium sulfide is 100-2000g / m<3> manganese sulfate solution; adding XY-3 impurity removal agent after filtration, wherein the dosage of XY-3 impurity removal agent is 50-400g / m<3> manganese sulfate solution, the temperatureis controlled at 30-80 DEG C, the reaction time is 0.5-3h, and the pH is 4.5-6.9; and filtrating to obtained purified manganese sulfate solution. The recovery rate of the qualified, refined and purified manganese sulfate solution is more than 90%, based on common electrolytic technique, the quality of products achieves national standard, the electrolytic yield is larger than 3kg / veneer, the powerconsumption is not more than 7500kwh / t, and the yield, cost and efficiency are all better than the traditional level of manganous carbonate production.

Description

Technical field: [0001] The invention relates to a manganese smelting method, in particular to a liquid preparation process of manganese oxide ore. Background technique: [0002] Since the development of electrolytic manganese smelting, manganese carbonate ore is almost always used in the production of electrolytic manganese in my country. Due to the gradual increase in the price of manganese carbonate ore, the production cost of electrolytic manganese has gradually increased, which has brought huge economic pressure to many enterprises. my country's low-grade manganese oxide ore is very abundant, and its price is relatively low. It is the preferred raw material to replace low-grade manganese carbonate ore. In the early 1990s, some manganese smelting enterprises began to use manganese oxide ore without roasting to produce electrolytic manganese dioxide and achieved success. Afterwards, many enterprises successively tried to use manganese oxide ore to produce electrolytic ma...

Claims

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Application Information

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IPC IPC(8): C25C1/10C22B3/08C22B3/46C22B58/00
Inventor 熊一言
Owner 熊一言
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