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Method for producing strontium chloride from strontium slag

A technology of strontium chloride and strontium slag, applied in the direction of calcium/strontium/barium chloride, calcium/strontium/barium halide, etc., can solve the problems of difficult control of crystal size, easy agglomeration of products, unstable product quality, etc. Achieve the effects of simple algorithm, convenient material feeding and discharging, and resource saving

Inactive Publication Date: 2019-03-22
赵怡欣
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this process, the particle size of the crystal is difficult to control, which makes the quality of the product unstable and the product is easy to agglomerate

Method used

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  • Method for producing strontium chloride from strontium slag
  • Method for producing strontium chloride from strontium slag
  • Method for producing strontium chloride from strontium slag

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Embodiment Construction

[0019] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and understandable, the specific implementation modes of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the above-mentioned and other purposes, features and advantages of the present invention will be clearer. Like reference numerals designate like parts throughout the drawings. The drawings have not been drawn to scale, emphasis instead being placed upon illustrating the gist of the invention.

[0020] see figure 1 and figure 2 The method for producing strontium chloride hexahydrate from the strontium slag of the present invention comprises the following steps.

[0021] S100: Lapis lazuli and raw coal are reduced and roasted in a rotary furnace under high temperature conditions, and the coarse barium and strontium materials obtained by roasting are put into a closed leaching tank filled with wate...

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Abstract

The invention discloses a method for producing strontium chloride from strontium slag, which comprises the following steps that S100, strontium slag is sent into a ball mill; S200, the strontium slagis ground into slurry by the ball mill; S300, hydrochloric acid is added into the slurry until solid particles in the slurry are not dissolved anymore; S400, residual is removed through filtration, and the filtrate is refined; S500, cooling crystallization is carried out; S600, the crystals are filtered and washed by a centrifuge, so that strontium chloride hexahydrate is obtained. The invention realizes the recycling of strontium salt.

Description

technical field [0001] The invention belongs to the field of chemical industry, in particular to a method for producing strontium chloride by using strontium slag. Background technique [0002] Strontium chloride can be used as a flux for the electrolysis of sodium metal, as a raw material for fireworks and other strontium salts, as well as for chemical reagents and organic synthesis catalysts. Strontium chloride is also an indispensable raw material for the production of plasma TV screens. Raw coal is mixed in a certain proportion and roasted and reduced in the furnace to generate crude strontium sulfide. After leaching, the remaining strontium slag contains about 30% acid-soluble strontium (calculated as strontium carbonate SrCO3). The use of raw materials causes a waste of rare strontium resources, and this part of acid-soluble strontium is not recovered. In the production of strontium chloride, the crystallization process is mainly carried out by intermittent cooling. ...

Claims

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Application Information

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IPC IPC(8): C01F11/24
CPCC01F11/24
Inventor 赵怡欣其他发明人请求不公开姓名
Owner 赵怡欣
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