Extract technology of semi-manganese oxide ore

A technology for semi-manganese oxide ore and semi-manganese oxide, which is applied in the field of semi-manganese oxide ore leaching process, can solve problems such as unsatisfactory reducing agents, and achieve the effects of easy product quality assurance, mild reaction conditions and low pigment concentration.

Inactive Publication Date: 2010-11-17
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] In summary, the reducing agent used in the current wet reduction leaching process is not ideal enough.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Manganese ore is crushed to cross 100 mesh sieves (composition is as shown in table 1), and cassava alcohol waste water (composition is as shown in table 2) of 2.5 times of manganese ore quality is added in reactor, and manganese ore is added, and then added Sulfuric acid with a concentration of 1.1 times the mass of manganese ore and a concentration of 98% is prepared with water so that the liquid-solid ratio is 4:1; the reaction leachate is obtained by stirring and reacting at a temperature of 95°C for 3 hours, and the Mn leaching rate of manganese ore reaches 95%.

[0024] Table 1 Composition analysis of manganese hemioxide ore

[0025] Element

Total Mn

MnCO 3

MnO 2

Fe

SiO 2

Al 2 o 3

CaO

MgO

S

P

content(%)

18.37

18.40

14.52

8.41

24.48

5.23

4.36

1.39

0.01

0.05

[0026] Table 2 Components of cassava alcohol wastewater

[0027] Element

Embodiment 2

[0029] Manganese ore is pulverized to cross 200 mesh sieves (composition is as shown in table 1), and cassava alcohol wastewater (composition is as shown in table 2) of 1.5 times of manganese ore quality is added in reactor, and manganese ore is added, and then Sulfuric acid with a concentration of 1.5 times the mass of manganese ore and a concentration of 93% is prepared with water so that the liquid-solid ratio is 3:1; the reaction leachate is obtained by stirring and reacting at a temperature of 90°C for 1 hour, and the Mn leaching rate of manganese ore reaches 91%.

Embodiment 3

[0031] Manganese hemioxide is pulverized to cross 400 mesh sieves (composition is as shown in table 1), in reactor, add manganese hemioxide quality 2.5 times cassava alcohol waste water (composition is as shown in table 2), add manganese hemioxide, then add Sulfuric acid with a concentration of 1.2 times the mass of manganese ore and a concentration of 98% is prepared with water so that the liquid-solid ratio is 4:1; the reaction leachate is obtained by stirring and reacting at a temperature of 70°C for 6 hours, and the Mn leaching rate of manganese ore reaches 92%.

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PUM

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Abstract

The invention provides a new method for extracting a semi-manganese oxide ore to prepare a manganese sulfate solution, belonging to the technical field of manganese ore extraction. The method comprises the following steps: crushing the semi-manganese oxide ore; adding cassava alcohol waste water in a reactor, then adding the semi-manganese oxide ore and sulfuric acid, and adjusting the ore pulp liquid-to-solid ratio to be 3:1-5:1 with water; and stirring at 70-98 DEG C for reaction for 1-6h to obtain the reaction lixivium, wherein the leaching rate of manganese is more than 90%. In the invention, the trade waste, i.e. cassava alcohol waste water is taken as a reducing agent, so that the method changes waste into treasures, has double benefits of environmental protection and economy, and has mild process condition and simple edulcoration process.

Description

Technical field: [0001] The invention relates to a process for leaching manganese half oxide ore, in particular to a method for leaching manganese half oxide ore by using cassava alcohol wastewater as a reducing agent in a sulfuric acid medium. Background technique: [0002] Cassava has the characteristics of large yield, high starch content, drought resistance, barren resistance, labor-saving planting, and low investment. One-third of my country's alcohol production is produced from cassava as raw material. Cassava alcohol waste water is the waste water discharged after the cassava fermented mash is used to distill alcohol in the initial distillation tower, and the distiller's grains are filtered out. The production of 1 ton of cassava alcohol produces about 7-15 tons of waste water. This type of waste water contains a large amount of organic matter and suspended matter, and is acidic. It is an acidic high-concentration organic waste water. If the waste water is directly d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B3/08C22B47/00
Inventor 粟海锋文衍宣
Owner GUANGXI UNIV
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