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Method for preparing manganese sulfate solution through reducing roasting-leaching of manganese nodule

A technology of manganese sulfate solution and sulfuric acid solution, which is applied in the field of preparing manganese sulfate solution, can solve the problems such as few industrial application reports, and achieve the effect of reducing equipment investment and operation costs and low roasting temperature

Pending Publication Date: 2019-08-23
GUIZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Despite the above studies, few industrial applications have been reported so far

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1. A method for preparing manganese sulfate solution by reduction roasting-leaching of manganese nodules is prepared according to the following steps;

[0030] a. Crush 100kg of manganese nodules to 300 mesh to obtain product A;

[0031] B, in every 100g A product, add 5g newborn carbon and mix, get mixed ore, every 100g mixed ore is added in 40ml sulfuric acid solution and stir, get B product; Described newborn carbon is that glucose or white sugar adds concentrated sulfuric acid reaction and obtains solid; The volume fraction of said sulfuric acid solution is 40%;

[0032] c, add water in B product, stir evenly, obtain C product, the liquid-solid mass ratio of C product is 0.5;

[0033] d, the C product is sent into the roasting furnace, and the roasting reaction is carried out. The temperature of the roasting reaction is 400° C., and the reaction time is 90 minutes to obtain the D product;

[0034] e. Transfer product D to the leaching tank, add 5ml of sul...

Embodiment 2

[0036] Example 2. A method for preparing manganese sulfate solution by reduction roasting-leaching of manganese nodules is prepared according to the following steps;

[0037] a. Crush 100kg of manganese nodules to 350 mesh to obtain product A;

[0038] B, in every 100g A product, add 8g newborn carbon and mix, get mixed ore, every 100g mixed ore is added in 50ml sulfuric acid solution and stir, get B product; Described newborn carbon is that glucose or white sugar adds concentrated sulfuric acid reaction and obtains solid; The volume fraction of said sulfuric acid solution is 45%;

[0039] c, add water in B product, stir evenly, obtain C product, the liquid-solid mass ratio of C product is 0.6;

[0040] d, the product C is sent into the roasting furnace, and the roasting reaction is carried out. The temperature of the roasting reaction is 500° C., and the reaction time is 110 minutes, and the product D is obtained;

[0041] e. Transfer product D to the leaching tank, add 6m...

Embodiment 3

[0043] Example 3. A method for preparing manganese sulfate solution by reduction roasting-leaching of manganese nodules is prepared according to the following steps;

[0044] a. Crushing 100kg of manganese nodules to 400 meshes to obtain product A;

[0045]B, in every 100g A product, add 10g newborn carbon and mix, get mixed ore, add every 100g mixed ore in 60ml sulfuric acid solution and stir, get B product; Described newborn carbon is that glucose or white sugar adds concentrated sulfuric acid reaction and obtains solid; The volume fraction of said sulfuric acid solution is 50%;

[0046] c, add water in B product, stir evenly, obtain C product, the liquid-solid mass ratio of C product is 0.7;

[0047] d, the C product is sent into the roasting furnace, and the roasting reaction is carried out. The temperature of the roasting reaction is 600° C., and the reaction time is 130 minutes to obtain the D product;

[0048] e. Transfer product D to the leaching tank, add 7ml of su...

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PUM

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Abstract

The invention discloses a method for preparing a manganese sulfate solution through reducing roasting-leaching of manganese nodule. The method comprises the following steps of a, breaking the manganese nodule to obtain a product A; b, adding newly born carbon into the product A for mixing, obtaining a mixed ore, adding a sulfuric acid solution into the mixed ore for stirring, and obtaining a product B; c, adding water into the product B, evenly stirring, and obtaining a product C; d, feeding the product C into a roasting furnace to have a roasting reaction, and obtaining a product D; e, transferring the product D into a leaching tank, adding the sulfuric acid solution or waste electrolyte, adding water for adjusting the liquid solid mass ratio, performing a stirring reaction, and obtaininga product E; f, carrying out liquid and solid separation on the product E, and obtaining a manganese sulfate solution, wherein the manganese sulfate solution can be used for electrolytic manganese production and also can be used for preparing of a high purity manganese sulfate product. The method has the advantages of being simple in process equipment, low in treatment cost, low in investment running cost, and high in manganese recovery rate and providing reference for development use of the manganese nodule.

Description

technical field [0001] The invention relates to a method for preparing manganese sulfate solution, in particular to a method for preparing manganese sulfate solution by reduction roasting-leaching of manganese nodules. Background technique [0002] Manganese nodules are lumpy seabed ores containing manganese, nickel, cobalt, copper and other non-ferrous metals, also known as polymetallic nodules. Deep-sea manganese nodules are widely distributed on the bottom of 4000-6000m. There are about 4,400 tons of manganese nodules per square kilometer on the deep seabed, and the total seabed reserves are estimated to be 3-3.5 trillion tons. The reserves of manganese nodules in the Pacific Ocean alone are 1.7 trillion tons, and they are still growing at a rate of about 10-16 million tons per year. Nodules contain more than 70 elements, among which the manganese content reaches 17.4%-28.07%, and the manganese content in the richest manganese nodules can reach 57%. China is the largest...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B3/08C22B1/02C22B47/00
CPCC22B1/02C22B3/08C22B47/0027C22B47/0063
Inventor 王家伟王海峰赵平源
Owner GUIZHOU UNIV
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