Microwave-assisting method for fast leaching vanadium in stone coal vanadium ore

A microwave-assisted and leaching technology, applied in the field of vanadium extraction metallurgy, can solve the problems of environmental pollution, slow vanadium leaching, and a large amount of flue gas, and achieve the effects of promoting diffusion, short heating time, and high heating efficiency

Inactive Publication Date: 2009-10-07
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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Problems solved by technology

But above-mentioned method all has some problems, and first two adopt the method for roasting and extracting vanadium to produce a large amount of flue gas in the roasting process, cause environmental pollution, and adopt high-concentration acid to extract vanadium though reduce roasting link, but the vanadium slow leaching

Method used

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Examples

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Effect test

Embodiment 1

[0018] Take a certain amount of rocky coal-based vanadium-containing ore samples with a particle size below 50 mesh, put them into a microwave-heated leaching tank, and use 5-20% H 2 SO 4 The solution is leached, the liquid-solid ratio is between 1-10, the microwave frequency is 0.3GHz-300GHz, the heating temperature is 100°C, and the stirring and leaching for about 100 minutes can make the leaching rate of vanadium in the mineral reach more than 85%.

[0019] However, under the same leaching conditions, the vanadium leaching rate is only 76% when heated in a water bath for 10 hours.

[0020] The microwave-assisted rapid leaching method of vanadium in stone coal vanadium ore of the present invention can also be used in the drying process of vanadium-containing minerals.

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Abstract

The invention discloses a microwave-assisting method for fast leaching vanadium in stone coal vanadium ore. The method adopts a microwave generating device as a heating source, a leaching agent is heated to about 100 DEG C for leaching, and the frequency of microwave is 0.3 GHz to 300 GHz. The method adopts raw materials of stone coal vanadium ore and other slag-containing vanadium such as fly ash containing vanadium, converter slag and the like, a microwave radiant type heating manner is adopted to heat the mineral aggregate fast and selectively, microwave energy is transferred by depending on the dielectric property of the mineral aggregate, heat is produced, and the aim of leaching vanadium is achieved by using the action of microwave activated molecules. The method can improve the leaching speed of vanadium in mineral greatly and has the advantages of short process, short period, high efficiency and high resource comprehensive utilization rate, and the method is suitable for all processes of leaching vanadium in vanadium ore by using a solution.

Description

technical field [0001] The invention belongs to the field of vanadium extraction metallurgy, and relates to a method for extracting vanadium in carbonaceous stone coal vanadium ore. Extraction of vanadium from vanadium solid waste and pretreatment of mineral drying and crushing. Background technique [0002] Vanadium is mainly used in the manufacture of high-speed cutting steel and other alloy steels and catalysts. Adding vanadium into steel can make vanadium steel with higher toughness, elasticity and mechanical strength than ordinary steel. Vanadium salts are often made into bright pigments. In addition, vanadium is an essential mineral for the normal growth of humans or animals. , It is generally believed that it helps to prevent the accumulation of cholesterol, reduce excessive blood sugar, prevent dental caries, and help make red blood cells. [0003] my country is a country rich in vanadium resources, and most vanadium mines exist in the form of stone coal. Stone co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B34/22C22B3/22C22B3/04
CPCY02P10/20
Inventor 兰新哲马红周陈向阳周军
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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