Process for producing high-concentration sodium nitrate brine through rotation dynamic leaching of nitratite ore

A technology of sodium nitrate and sodium nitrate, which is applied in the field of producing high-concentration sodium nitrate brine, can solve the problems of low leach solution concentration, high production cost, and low leaching yield, and achieve high leach solution concentration and low production cost , The effect of high leaching yield

Inactive Publication Date: 2013-05-08
XINJIANG ANHUA MINING INVESTMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The purpose of the present invention is to propose a method that can effectively solve the problems of long leaching period, low concentration of leaching solution, difficult slag discharge, low leaching yield and high production cost in the traditional process, so that the sodium saltpeter ore resources can be more efficiently obtained. In order to make full use of it, large-scale production of high-concentration sodium nitrate brine using sodium nitrate ore rotary dynamic leaching

Method used

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  • Process for producing high-concentration sodium nitrate brine through rotation dynamic leaching of nitratite ore
  • Process for producing high-concentration sodium nitrate brine through rotation dynamic leaching of nitratite ore

Examples

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Embodiment 1

[0024] Embodiment 1: as figure 1 As shown, the collected sodium saltpeter raw ore is sent to the primary crusher 1 for crushing, and then sieved by the sieve 2 with an aperture of 50 mm. The pellets with a particle size of less than 50 mm enter the feed bin 15, and the pellets with a particle size larger than 50 mm enter the secondary crusher. The stage crusher 3 continues to crush until the particle size is less than 50mm, enters the feed bin 15, falls by itself, and is transported into the machine through the auger at the feeding port 14 of the TXH-1300 type digester 6. The middle and upper part of the 6 cavities of the digestion machine are connected with water pipes 4, and a plurality of shower heads 5 are installed on the pipes. According to the solid-to-liquid mass ratio of pellets:water of 1: 0.5-0.8, spray leaching water on the pellets. The leaching water can be added with normal temperature water such as sand washing water and circulating sodium nitrate brine. The lea...

Embodiment 2

[0026] Embodiment 2: as figure 2 As shown, the collected sodium saltpeter raw ore is sent to the primary crusher 1 for crushing, and then sieved by the sieve 2 with an aperture of 50 mm. The pellets with a particle size of less than 50 mm enter the feed bin 15, and the pellets with a particle size larger than 50 mm enter the secondary crusher. The stage crusher 3 continues to crush until the particle size is less than 50mm, then enters the material bin 15, falls by itself, and is transported into the inside the furnace. The middle and upper part of the furnace cavity is connected with a water pipe 4, and a plurality of shower heads 5 are installed on the pipe. According to the solid-to-liquid mass ratio of pellets:water of 1:0.3-0.5, spray leaching water on the pellets, which can be added with normal temperature water such as sand washing water and circulating sodium nitrate brine. At the same time, through the steam pipe 18 and the steam shaft 17 on the right side of the r...

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Abstract

The invention discloses a process for producing high-concentration sodium nitrate brine through rotation dynamic leaching of nitratite ore and belongs to the field of the chemical industry of inorganic salt. The method comprises the following steps of: performing primary crushing, screening, and secondary crushing on nitratite raw ore, feeding the nitratite raw ore granules with a grain size of less than 50 mm in to a storage bin, and conveying into a slaker; spraying infiltration water onto the materials according to the solid to liquid mass ratio of the granules to water which is 1:(0.5-0.8), wherein the infiltration time is 30 to 40 minutes; after the rotation dynamic leaching, discharging insoluble sandstone with the grain diameter of more than 1.7 mm in the slurry, and other impurities from a coarse sand discharge port; feeding the slurry in to a classification and washing machine from a separation device on the slaker; separating fine insoluble sandstone with the grain diameter of more than 0.37 mm, and other impurities by using a separation device of the classification and washing machine; throwing the separated slurry into a program control polypropylene high-pressure membrane filter press and separating sludge from water, wherein the filtrate obtained after separation is the sodium nitrate brine, and conveying the sodium nitrate brine into the subsequent evaporation work section by using a pump and a pipeline. The process is simple and is high in operability; and the leaching cycle is short, the leaching solution has high concentration, the leaching yield is high,the slagging difficulty is low, and energy consumption and cost are low.

Description

technical field [0001] The process for producing high-concentration sodium nitrate brine by using sodium nitrate ore rotary dynamic leaching belongs to the field of inorganic salt chemical industry, and in particular relates to a process for producing high-concentration sodium nitrate brine. Background technique [0002] Sodium nitrate ore can be processed to produce natural high-quality sodium nitrate and potassium nitrate. This product is in short supply in my country and the world. Regardless of added value and function, it is better than potassium sulfate and potassium chloride. It is a scarce high-quality green potassium fertilizer. It is a binary green fertilizer that is in short supply in the world. [0003] At present, the leaching methods of sodium saltpeter ore at home and abroad mainly include heap leaching, percolation leaching, stirring leaching, screw conveying dynamic leaching, surface spray leaching, etc., each of which has advantages and disadvantages: [00...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01D9/02
Inventor 王传福张占良朱庆振
Owner XINJIANG ANHUA MINING INVESTMENT
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