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A cylindrical horizontal atmospheric pressure enhanced leaching tank

A technology of enhanced leaching and cylindrical body, applied in the direction of improving process efficiency, etc., can solve the problems of difficult expansion of production capacity and equipment expansion, etc., and achieve the effect of increasing reaction opportunities, no waste of resources, and reducing operation difficulty

Inactive Publication Date: 2016-05-04
伍耀明
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to meet this process requirement, the Chinese patent CN103305691 on September 18, 2013 disclosed "a large-scale sulfuric acid atmospheric pressure enhanced leaching tank". The effective volume of the leaching tank is 200 cubic meters. In the process, three leaching tanks are used for continuous operation, and the laterite nickel ore containing 1.7% nickel is treated according to the normal pressure enhanced leaching method of CN201310111769.6, and the output of 10,000 tons of nickel can be achieved per ton of ore based on the recovery of 16kg of finished nickel. , but the device is difficult to scale up
At present, the nickel grade of most lateritic nickel mines is about 1wt%, and it is difficult to expand the production capacity without larger equipment

Method used

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  • A cylindrical horizontal atmospheric pressure enhanced leaching tank
  • A cylindrical horizontal atmospheric pressure enhanced leaching tank
  • A cylindrical horizontal atmospheric pressure enhanced leaching tank

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Experimental program
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Effect test

Embodiment 1

[0044] The cylindrical horizontal atmospheric pressure enhanced leaching tank described in the present invention has components and connection methods as follows.

[0045] 1. General components and connections

[0046] Such as figure 1 As shown, a cylindrical horizontal atmospheric pressure enhanced leaching tank,

[0047] Including the groove head I, the groove body J, the groove end head K and the half groove body L, the ends of the groove head I, the groove body J, the groove end head K and the half groove body L are all provided with legal Flange M, between the two through the flange sealing connection;

[0048] At least one feeding port I1 is arranged on the top of the groove head I, a discharge port I2 is arranged on the bottom of the groove head I, and an air pressure gauge I3 is arranged on the groove head I;

[0049] The tank body J includes a tank cylinder J1, a partition assembly J2 and a stirring assembly J3. The upper part of the tank cylinder J1 is provided wi...

Embodiment 2

[0075] The structural feature of the leaching tank of the present invention is that the tanks with flanges are connected one by one with flanges, and the number of connections can be determined according to the needs, so it can be made into a super-large cylindrical horizontal atmospheric pressure enhanced leaching tank. The length of the tank body of each section is equivalent to a "stirring and mixing chamber", but the "stirring and mixing chamber" is not bounded by the boundary of the connecting flange, but by the partition. In order to reduce the number and area of ​​openings in the tank, the heat exchange tubes are installed on both sides of the partition, so that the partition and the heat exchange tubes use the same installation port. The mixer of the "stirring mixing chamber" must be installed in the middle of the two partitions.

[0076] According to the required processing capacity, design a full-lined polytetrafluoroethylene temperature-resistant and anti-corrosion ...

Embodiment 3

[0082] Using sulfuric acid atmospheric pressure enhanced leaching process, leaching laterite nickel ore in a cylindrical horizontal leaching tank can achieve a good leaching effect, which is manifested in short leaching time, large processing capacity, and high leaching rate of nickel, cobalt and other useful elements.

[0083] Adopt embodiment 2 leaching tank, pack 20 tons of ore by every 100 cubic meters of volume, 90% effective volume 1415 cubic meters, can once load ore (1415÷100×20=) 283 tons. The maximum conveying capacity of 300ZD-60 slurry pump is 2400m 3 / h=40m 3 / min, the ball mill slurry of 283 tons of ore is about (283×3=)849m 3It takes time (849÷40=) 21.225≈25min to add the ball mill pulp, and it needs to add concentrated sulfuric acid (283÷1.8=) 157.2≈157m 3 , the pumps conveying concentrated sulfuric acid generally do not exceed 500m 3 / h. Adding concentrated sulfuric acid directly into the ball mill pulp will cause the temperature to rise from room temperat...

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Abstract

A cylindrical horizontal normal-pressure reinforced leaching tank comprises a tank head seal head, a tank body and a tank tail seal head, wherein the tank head seal head, the tank body and the tank tail seal head are the same in diameter; flanges are arranged at the end heads of the tank head seal head, the tank body and the tank tail seal head; the tank head seal head, the tank body and the tank tail seal head are in sealing connection pairwise via the flanges; the tank body comprises a tank drum, a partition component and a stirring component; calandria heating pipes and coil heating pipes are arranged on the partition component and the stirring component; blades of a stirrer are in straight plate shapes; the stirrer can be controlled to rotate forward or reversely. When the tank head seal head, the tank body and the tank tail seal head are assembled into a whole, a plurality of tank bodies can be connected according to production requirements to form a large leaching tank. Continuous leaching operation or batched interrupted operation can be achieved by adjusting rotation directions of the stirrers. The leaching tank is fully-sealed, is provided with a tail gas absorption system, has no pollutant emission, and is safe, environment-friendly, and easy to manufacture and mount, and spare parts are convenient to maintain or replace.

Description

technical field [0001] The invention relates to the technical field of non-ferrous metal wet smelting, in particular to a cylindrical horizontal atmospheric pressure enhanced leaching tank. Background technique [0002] At present, the hydrometallurgy of refractory minerals in the world is developing in the direction of enhanced leaching, and the means of enhanced leaching is mostly high-pressure leaching in autoclaves. For example, China ENFI Engineering Technology Co., Ltd. designed high-pressure leaching equipment and built it abroad. The world's first-class Ramu nickel-cobalt project with an annual processing capacity of 3.21 million tons of laterite nickel ore. Shanghai Morimong Pressure Vessel Co., Ltd. also manufactures Large hydrometallurgical autoclave. All show that the current hydrometallurgy is developing in the direction of large-scale projects, large-scale equipment, and cutting-edge technology. But for equipment like autoclaves, the larger the required vol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B3/02C22B3/08
CPCY02P10/20
Inventor 伍耀明
Owner 伍耀明
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