A kind of xanthate vacuum preparation device

Abstract

The invention relates to a vacuum preparation system of xanthate and belongs to the technical field of chemical engineering. The system comprises a mill feed pipe, a mill, a mill discharge pipe, a fan, an air pipe, a high-pressure transmitter, a high-pressure air pipe, a feed pipe and reaction liquid containers, and further comprises a feed system, a vacuum synthesizer, a discharge pipe, a finished product bin, a cold water layer and a refrigerant water supply system; xanthate is produced in a vacuum environment; a reaction of oxidizing ions with oxygen or carbon dioxide and the like in air inan xanthate production reaction process is effectively avoided; the purity of xanthate is improved; at the same time, many stirring rods are uniformly distributed on two stirring shafts; after synthesis liquid is added into a synthesis case, vigorous stirring can be achieved; mutual contact between materials is enhanced; alkali can be mixed with the synthesis liquid timely and uniformly; automatic feed of sodium hydroxide is achieved at the same time; and refrigerant water is supplied centrally.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to a xanthate vacuum preparation device. Background technique [0002] The scientific name of xanthate is hydrocarbyl xanthate or hydrocarbyl dithiocarbonate, commonly used are ethyl xanthate, butyl xanthate, isopropyl xanthate, isobutyl xanthate, pentyl xanthate, hexyl xanthate Wait. [0003] Xanthate has a wide range of uses. It is used as a vulcanization accelerator in the rubber industry. In analytical chemistry, potassium ethyl xanthate is used as a precipitant and colorimetric reagent for metal ions such as copper and nickel. In the metallurgical industry, xanthate is used as a precipitation agent from a solution. Reagents for cobalt and nickel, and sodium cellulose xanthate for man-made fibers. Xanthate is currently the most widely used collector for sulfide ores. It is estimated that the amount of various types of xanthate used in flotation in the world ranges fr...

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Problems solved by technology

[0005] The entire chemical reaction in the xanthate production process is completed in the kneader. Although the traditional kneader is a sealed space, there is still a lot of air in the reaction kettle of the kneader. During the process of xanthate production reaction Chinese xanthate and oxidized ions are easy to react with water, oxygen or carbon dioxide in the air, which will affect the production of xanthate and reduce the purity of xanthate. At the same time, the length of the stirring blade of the traditional kneader is longer, and the load on the motor will increase when the temperature rises. The problem of the installation angle of the mixing blade is that when the sodium hydroxide powder is added to the kneader, the state change of the reactant is more complicated, from slurry and semi-solid to solid powder, and it must be stirred vigorously to make the reactant mix evenly, while the traditional If the sodium hydroxide in the kneader cannot be uniformly mixed with the material in time, the local reaction will be accelerated, and it will not be able to fully and timely stir, which is not convenient for the completion of the reaction.

[0006] Sodium hydroxide as a raw material is manually fed into the mill by shoulder-carrying and hand-holding, and the block-shaped sodium hydroxide is ground into sodium hydroxide powder. After the sodium hydroxide contacts with the moisture in the air, it will produce A lot of heat, and sodium hydroxide is extremely corrosive and other characteristics, it is easy to generate a large amount of sodium hydroxide dust during the handling process, the working environment is poor, it is easy to cause occupational diseases, the labor intensity of the workers is high, and multiple workers are required to carry at the same time. Sodium hydroxide is delivered, and the work efficiency is low, the labor cost is high, and the staff mobility is high.

[0007] In the process of xanthate preparation and synthesis, many equipments need to be cooled, while the traditional xanthate refrigerant water equipment has a small cold storage capacity and limited water supply, so it needs to be equipped with multiple sets or a separate set of cooling equipment for the required equipment to increase the equipment’s capacity. The investment cost and scattered equipment are not conducive to management and increase the workload of maintenance and repair. At the same time, the temperature of the refrigerant water in the traditional xanthate refrigerant water equipment fluctuates greatly, and the xanthate synthesis process needs to effectively control the synthesis temperature, which requires the use of refrigerant water. The temperature of the refrigerant water is inaccurate or fluctuates greatly, which is not conducive to the synthesis of xanthate and reduces the purity of xanthate

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