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Process method for manufacturing manganese products through high-concentration SO2 smoke leaching manganese ore pulp

A process method, SO2 technology, applied in the direction of manganese sulfate, etc., can solve the problem of easy clogging of nozzle nozzle holes, etc., and achieve the effects of low cost, reduced production cost, and high manganese leaching rate

Active Publication Date: 2015-12-30
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is generally believed that if the spray tower is used as the manganese reaction equipment for leaching manganese ore slurry by flue gas, the nozzle holes of the nozzle are easy to be blocked, so it is not used

Method used

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  • Process method for manufacturing manganese products through high-concentration SO2 smoke leaching manganese ore pulp
  • Process method for manufacturing manganese products through high-concentration SO2 smoke leaching manganese ore pulp
  • Process method for manufacturing manganese products through high-concentration SO2 smoke leaching manganese ore pulp

Examples

Experimental program
Comparison scheme
Effect test

Embodiment example 1

[0032] The manganese oxide ore used in this example comes from South African manganese ore, and the desulfurization slurry is configured with electrolytic manganese anolyte, and the sulfur-containing flue gas is manganese slag calcination flue gas. The composition of flue gas from slag calcination is shown in Table 3, and the process flow is attached image 3 shown.

[0033] Table 1 Manganese ore composition analysis

[0034]

[0035] Table 2 Composition and parameters of electrolytic manganese anolyte

[0036]

[0037] Table 3 Manganese slag calcination flue gas composition list

[0038]

[0039] The specific implementation is as follows:

[0040] 1. Grind the manganese ore and pass through a 100-mesh sieve to obtain the raw material ore powder for later use;

[0041] 2. Manganese ore powder and electrolytic manganese anolyte are mixed by metering according to the liquid-solid weight ratio of 8:1 to make manganese ore slurry, and fully stirred at 70°C to make it ...

Embodiment example 2

[0051] The manganese oxide ore used in this example comes from South African manganese ore. Desulfurization pulp is prepared with water for desulfurization. The flue gas is simulated flue gas in the laboratory. The composition analysis of manganese ore is shown in Table 5. The composition of the simulated flue gas is shown in Table 6. figure 1 shown.

[0052] Table 5 Manganese ore composition analysis

[0053]

[0054] Table 6 Manganese slag calcination flue gas composition table

[0055]

[0056] The specific implementation is as follows:

[0057] 1. Grind the manganese ore and pass through a 100-mesh sieve to obtain the raw material ore powder for later use;

[0058] 2. Manganese ore powder and water are mixed by metering according to the liquid-solid ratio of 4:1 to make manganese ore slurry, and fully stirred at about 70°C to make it reach a uniform state for later use;

[0059] 3. The desulfurization system is composed of a spray tower designed with five-stage to...

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Abstract

The invention discloses a process method for manufacturing manganese products through high-concentration SO2 smoke leaching manganese ore pulp. The process method mainly comprises the steps that high-concentration SO2 smoke enters from a first-stage tower segment of a multi-stage spray tower, manganese ore pulp liquid enters from a last-stage tower segment of the multi-stage spray tower, in each-stage tower segment, the smoke enters from the lower portion of the tower segment to be subjected to a contact reaction with the manganese ore pulp liquid sprayed down from the top, and a proper amount of air is blown into the tower bottom to reinforce desulfuration and leaching of manganese. The manganese ore pulp liquid subjected to full leaching is finally discharged out of the first-stage tower segment, a manganese sulfate solution product is obtained, the fully-desulfurated smoke is exhausted out of the last-stage tower segment, the content of SO2 reaches the standard, and the smoke is directly exhausted into air. The smoke with unqualified SO2 content enters a deep desulfurization tower, and SO2 in gas continues to be removed till the content of SO2 reaches the standard. The operating temperature of the contact reaction ranges from 70 DEG C to 85 DEG C, and pH ranges from 2 to 3. The method has the advantages of being high in resource utilization rate, high in desulfuration efficiency, high in manganese leaching rate, high in adaptability to manganese oxide ore, low in cost and the like.

Description

technical field [0001] The invention relates to the technical field of hydrometallurgy and flue gas sulfur resource pollution control, in particular to the use of high-concentration SO 2 A process for preparing manganese products by leaching manganese from manganese ore with flue gas. technical background [0002] At present, the flue gas emitted by many industrial kilns, the SO in the flue gas 2 The concentration is very high, such as flue gas produced by non-ferrous metal smelting, high-sulfur slag calcination (manganese slag calcination), SO 2 The weight content is often as high as 15000~25000mg / m 3 , direct discharge will lead to serious environmental pollution, so all these flue gases must be effectively treated before they can be discharged up to the standard. With the increasing environmental protection standards, many flue gas desulfurization methods have been researched and developed at home and abroad, such as limestone gypsum method. However, most methods cann...

Claims

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Application Information

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IPC IPC(8): C01G45/10
Inventor 蒋文举杨林朱晓帆李建军
Owner SICHUAN UNIV
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