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Vanadium extraction method and vanadium extraction device of high silicon refractory stone coal vanadium ore

A technology of refractory, stone coal vanadium, applied in the direction of improving process efficiency, etc., can solve the problems of low vanadium extraction rate, no heat insulation layer, poor raw material applicability, etc., to achieve strong raw material adaptability, good airtight performance, and easy operation good environment effect

Active Publication Date: 2022-05-17
CENT SOUTH UNIV
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  • Abstract
  • Description
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Problems solved by technology

[0009] Patent 201320245819.5 discloses a shaft furnace roasting system for stone coal vanadium ore, which mainly solves the problems of dust and harmful gas pollution and low utilization rate of oxygen-enriched air. Symbiosis and dissociation of vanadium and silicate in complex and refractory stone coal vanadium ore
[0010] Patent 201020039399.1 discloses a roasting equipment for extracting vanadium from stone coal, which mainly solves the problem of difficult control of the narrow roasting temperature range. The equipment is not equipped with a heat insulation layer, and the heat loss is serious, resulting in increased energy consumption, and the equipment cannot be improved. Symbiosis and dissociation of vanadium and silicate in complex and refractory stone coal vanadium ore
[0011] Therefore, most of the currently disclosed stone coal vanadium extraction devices are the optimization of existing equipment, such as temperature range control and grinding dust control, which have little improvement in the extraction rate of vanadium in subsequent stone coal vanadium mines, and poor raw material applicability. Solve the problem of dissociation of strong paragenetic minerals such as vanadium and silicate in complex and refractory stone coal vanadium ores, and it is difficult to achieve efficient extraction of vanadium in refractory stone coal vanadium ores
Most of the currently disclosed methods for extracting vanadium from stone coal use sulfuric acid slaking or high-temperature roasting to pretreat stone coal vanadium ore, but there are still problems such as long process, high energy consumption, poor raw material applicability, and unsatisfactory vanadium extraction rate.
No new method for vanadium extraction has been developed to solve the problem of low vanadium extraction rate after conventional slaking or roasting pretreatment in high-silicon refractory stone coal vanadium ore

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  • Vanadium extraction method and vanadium extraction device of high silicon refractory stone coal vanadium ore
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  • Vanadium extraction method and vanadium extraction device of high silicon refractory stone coal vanadium ore

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Embodiment 1

[0069] The raw materials treated in the present embodiment are high silicon refractory stone coal vanadium ore, the main raw materials as shown in Table 1, the silicon content of 27.37%, the main phase is quartz, Yili stone and other silicate minerals, and most of the vanadium is in the above-mentioned quartz, Yili stone and other silicate minerals wrapped state, directly sulfated roasting - water immersion treatment, the leaching rate of vanadium is only 55.3%, the need to further improve the leaching rate of vanadium.

[0070] Table 1: Elemental analysis results of high silicon refractory stone coal vanadium ore in example 1

[0071]

[0072] Using the vanadium extraction device and vanadium extraction method of high silicon refractory stone coal vanadium ore in the present embodiment, the results of the above high silicon refractory stone coal vanadium ore are as follows:

[0073] as Figure 1 As shown in the present embodiment, the high silicon difficult to treat the vanadiu...

Embodiment 2

[0090] The raw materials treated in the present embodiment are high silicon refractory stone coal vanadium ore, the main raw materials as shown in Table 2, the silicon content of 34.37%, the main phase is quartz, dolomite and other silicate minerals, and most of the vanadium is in the state of being surrounded by the above-described quartz, dolomite and other silicate minerals, directly sulfated roasting - water immersion treatment, the leaching rate of vanadium is only 41.8%, the leaching rate of vanadium needs to be further improved.

[0091] Table 2: Elemental analysis results of high silicon refractory stone coal vanadium ore in Example 2

[0092]

[0093] Using the vanadium extraction device and vanadium extraction method of high silicon refractory stone coal vanadium ore in the present embodiment, the results of the above high silicon refractory stone coal vanadium ore are as follows:

[0094] The vanadium extraction device of the high silicon refractory stone coal vanadiu...

Embodiment 3

[0101] The raw materials treated in the present embodiment are high silicon refractory stone coal vanadium ore, the main raw materials as shown in Table 3, the silicon content of 19.37%, the main phase is quartz, dolomite, magnesium aluminum garnet and other silicate minerals, and most of the vanadium is in the above-mentioned quartz, dolomite, magnesium aluminum garnet and other silicate minerals wrapped state, directly sulfated roasting - water immersion treatment, the leaching rate of vanadium is only 62.4%, the need to further improve the leaching rate of vanadium.

[0102] Table 3: Elemental analysis results of embodiment 3 high silicon refractory stone coal vanadium ore

[0103]

[0104] Using the vanadium extraction device and vanadium extraction method of high silicon refractory stone coal vanadium ore in the present embodiment, the results of the above high silicon refractory stone coal vanadium ore are as follows:

[0105] The vanadium extraction device of the high silic...

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Abstract

The invention discloses a method for extracting vanadium from high-silicon refractory stone coal vanadium ore, which comprises the following steps: S1: mixing high-silicon refractory stone coal vanadium ore, sulfuric acid and a stirring medium, and realizing high-silicon refractory Dissociation of stone coal vanadium ore to obtain activated minerals; S2: Separating the stirring medium and activated minerals; S3: Adding acid to preheat and pretreat the activated minerals to obtain pretreated minerals; S4: Roasting the pretreated minerals to obtain roasted Mineral; S5: leaching the roasted mineral with water to obtain a vanadium-containing leaching solution. The invention also discloses a vanadium extracting device for high-silicon refractory stone coal vanadium ore. The vanadium extraction device and vanadium extraction method of the high-silicon refractory stone coal vanadium ore of the present invention can realize the preliminary aging of vanadium in the high-silicon refractory stone coal vanadium ore, and can also realize the strong symbiotic minerals in the refractory stone coal vanadium ore The high-efficiency dissociation of vanadium can realize the efficient extraction of vanadium in various refractory stone coal vanadium ores, and the vanadium extraction rate can reach more than 95%.

Description

Technical field [0001] The present invention belongs to the field of metal extraction technology, in particular to a vanadium extraction method and vanadium extraction device. Background [0002] Vanadium is a high melting point metal, similar in nature to tantalum and niobium, and has a strategic position in many fields. Vanadium added to steel can enhance hardenability and high temperature resistance, can refine grains, stabilize the structure, vanadium in the steel industry application accounted for 90%. China is the world's largest producer of vanadium and the fastest growing vanadium consumption. Stone coal vanadium ore is an important vanadium ore resource in China, and the reserves are large, with the gradual consumption of easy-to-treat stone coal vanadium ore, difficult to treat stone coal vanadium ore has gradually become the main raw material of vanadium smelting enterprises. It is of great strategic significance to develop a new process and new equipment for efficien...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B34/22C22B1/06C22B3/04
CPCC22B34/22C22B1/06C22B3/04Y02P10/20
Inventor 于大伟张磊李浩郭学益田庆华
Owner CENT SOUTH UNIV