Method for preparing barium hydroxide by using barium carbonate

A barium hydroxide and barium carbonate technology, applied in the direction of calcium/strontium/barium oxide/hydroxide, etc., can solve the problems of long process flow, deteriorating working environment of workers, and high production cost, so as to reduce production cost and improve equipment Effects of volume utilization and reduction of firing temperature
CN102923748AActive Publication Date: 2013-02-13HUNAN SHIZHUYUAN NON FERROUS METAL
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
HUNAN SHIZHUYUAN NON FERROUS METAL
Publication Date
2013-02-13

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Abstract

The invention discloses a method for preparing barium hydroxide by using barium carbonate. The method comprises the following steps of firstly grinding ores containing barium carbonate into ore powder, carrying out high-temperature roasting on the ore powder in a suspension fluidized state to obtain roasted ore containing barium hydroxide, soaking the roasted ore in water to react and generate a barium hydroxide solution, carrying out solid-liquid separation on the barium hydroxide solution, cooling and crystallizing to obtain barium hydroxide products. The method for preparing the barium hydroxide by using the barium carbonate, disclosed by the invention, has the advantages that the heat transfer area of the ore powder is large, each ore particle can uniformly and totally finish a chemical reaction, the reaction time is short, and the utilization rate of barium carbonate is high.
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Description

technical field

[0001] The invention relates to a method for preparing barium hydroxide, in particular to a method for preparing barium hydroxide with barium carbonate. Background technique

[0002] Barium hydroxide has a wide range of uses and strong applicability. It is widely used in the manufacture of barium-based grease, plastic stabilizers and multi-functional additives for petrochemical products. It is also the first choice for purifying chemical products such as refined oil and sucrose.

[0003] There are two traditional production methods of barium hydroxide:

[0004] (1) Witherite hydrolysis process: This process is to process witherite (BaCO 3 ) roasted at high temperature to make BaCO 3 Decomposed into BaO, then hydrolyzed to get Ba(OH) 2 , whose reaction is:

[0005]

[0006] BaO+H 2 Oโ†’Ba(OH) 2 (2)

[0007] The key point of this method is roasting. The furnace types used are generally tunnel kilns and downdraft kilns, and the roasting temperature i...

Claims

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