Method for extracting high-valence manganese from manganese carbonate ore

Abstract

This invention has provided one kind of method to leach high price manganese from manganese carbonateore, which belongs to the hydrometallurgy domain. It takes the glucose or the plant biomass and sulfuric acid as reducing agent of high pricemanganese in manganese carbonate ore, adopting microwave radiation glucose to promote high price manganese to revert, the concrete step includes: Takes 1 copy 100-200 sieve manganese carbonateore, add 10 -20 copy water to modulate the pulp; Again add 60% density sulfuric acid to pulp, the load ratio of mineral powder and sulfuric acid is 1: 6 -9; Simultaneously, add glucose or plant biomass, the load ratio of mineral powder and glucose or plant biomass is 10 -15: 1, stir evenly; radiate under 500 -1000W microwave, stir and respond for 4-10min, leach temperature is controlled at 50degree C-60 degree C, then get lixivium by filtering. This invention has the merits of lower reaction temperature, reducing acid consume and reduce leaching time of the manganese ore, high thermal using and respond rapidly.

Description

technical field [0001] The invention relates to a method for reducing high-valent manganese when manganese ore is leached, and belongs to the field of hydrometallurgy. Background technique [0002] With the rapid economic growth, China has become the world's largest producer, exporter and consumer of electrolytic manganese. Although domestic reserves of manganese ore available for industrial use have reached 300 million tons, more than 80% of them are poor manganese ore, and the average manganese content of the ore is only about 20%. Generally, the chemical processing technology of manganese ore is divided into two types: acid method and alkali method, and the process route is mainly determined according to the existence form of manganese in the ore and the types of products produced. For example, if the valence state of manganese in manganese ore exists in the positive divalent state, the acid method is often used; if it exists in the positive tetravalent state, the alkali...

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Problems solved by technology

In the method in which plant biomass such as sugarcane molasses, bran, and rice husk are used as reducing agents, the raw materials are cheap and easy to obtain, but it is difficult to hydrolyze biomass powder into sugar, which requires higher reaction temperature and acid The problem of increased consumption