A kind of preparation method of granular xanthate

A xanthate and granular technology is applied in the field of preparing granular xanthate, which can solve the problems of irritating odor of xanthate, high product production cost, environmental pollution of manufacturers, etc., and achieves elimination of irritating odor, easy recycling, Realize the effect of recycling

Active Publication Date: 2016-04-20
CENT SOUTH UNIV
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method uses water as a diluent, which can also be said to be a solvent; on the one hand, its addition amount is relatively small, and on the other hand, water is not a very suitable solvent. In this solvent system, water glass, sodium carbonate and xanthate are difficult to mix evenly, seriously Affect the quality of granular xanthate products, and the vacuum drying process needs to strictly control the temperature and pressure, and the operation is cumbersome, because the drying process heats up too fast and the temperature is too high, which will cause the xanthate particles to burst, pulverize or agglomerate, and only part of the granular If the xanthate is qualified, the granular material needs to be sieved, and the sifted powdery material is returned to the granulator for re-granulation, resulting in high production costs; more importantly, this method still does not solve the irritating odor of xanthate. large, causing serious pollution to the environment of xanthate production plants and mineral processing plants. It can be seen that using the above method to granulate the powdery xanthate produced by the direct synthesis method has low yield, low grade, and high impurity content. , easy to oxidize, easy to decompose, complex operation and other defects, and make the manufacturer's environmental pollution serious

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of preparation method of granular xanthate
  • A kind of preparation method of granular xanthate
  • A kind of preparation method of granular xanthate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The preparation of embodiment 1 granular isobutyl xanthate

[0033]With the ratio of 101.19 parts of dichloromethane and carbon disulfide substance being 1:1 mixture as solvent, 29.95 parts of purity is 99% isobutanol and 32.31 parts of purity are 99% carbon disulfide is added in the reactor, under stirring The mixture was cooled to about 15°C, then 16.68 parts of granular sodium hydroxide (96% purity) was added to the reactor, stirred and reacted at 25°C for 2 hours, 0.75 parts of eucalyptol was added, stirred evenly, and then Distill under reduced pressure at 60°C for 1 hour to remove the solvent and water. After the solvent and water were allowed to stand and separate into layers, the solvent was recovered, and the obtained powdery isobutylxanthate was compressed with a 769YP-15A powder tablet press to obtain Φ5×8 (mm) xanthate granules, no irritating odor of xanthate, slightly faint fragrance. It has a certain hardness, 1.0 meters away from the hard ground, free fa...

Embodiment 2

[0034] The preparation of embodiment 2 granular isobutyl xanthates

[0035] Add 133.50 parts of carbon disulfide and 29.95 parts of isobutanol with a purity of 99% into the reactor, and cool the mixture to about 15°C under stirring, then add 16.68 parts of flaky sodium hydroxide (96% in purity) to the reaction In the container, stir and react at 25°C for 2 hours, add 0.75 parts of camphor, stir evenly, and then distill under reduced pressure at 60°C for 1 hour to remove solvent and water. After the solvent and water are separated and separated, the solvent is recovered. The prepared powdery isobutyl xanthate is tableted with a 769YP-15A powder tablet press to obtain Φ5×8 (mm) xanthate granules, without xanthate irritating odor, slightly faint camphor fragrance, and has a certain hardness , 1.0 meters away from the hard ground, free fall 10 times without breaking, good solubility in water. The analysis showed that the purity of the isobutyl xanthate product was 95.91%, the moi...

Embodiment 3

[0036] The preparation of embodiment 3 granular isobutyl xanthates

[0037] Add 101.19 parts of dichloromethane, 29.95 parts of isobutanol with a purity of 99% and 32.31 parts of carbon disulfide with a purity of 99% into the reactor, and cool the mixture to about 15°C under stirring, and then add 16.68 parts of granular sodium hydroxide (96% purity) was added to the reactor, stirred and reacted at 25°C for 2 hours, added 0.75 parts of additives (the mass ratio of eucalyptol to camphor was 1:1), stirred evenly, and then decompressed at 60°C Distill for 1 hour to remove the solvent and water. After the solvent and water were allowed to stand for stratification, the solvent was recovered, and the obtained powdery isobutylxanthate was compressed with a 769YP-15A powder tablet machine to obtain Φ5×8 (mm ) Xanthate granules, no irritating odor of xanthate, slightly faint camphor fragrance. It has a certain hardness, 1.0 meters away from the hard ground, free fall 10 times without ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
boiling pointaaaaaaaaaa
Login to view more

Abstract

The invention discloses a preparation method for granular xanthate. The preparation method comprises the following steps of adding 0.05%-5% of additives in a xanthate synthesis process by using a solvent method; distilling a recovered solvent after reaction is finished; and granulating the xanthate to obtain the granular xanthate. The additives comprise one or more of alcohol perfume, phenol perfume, ketone perfume, ether perfume and ester perfume, pungent odor of the xanthate can be eliminated by using the additives, and a flotation effect is improved. By using the preparation method for the granular xanthate, the work environment of the xanthate in producing and using processes can be effectively improved, and industrial production is realized easily.

Description

technical field [0001] The invention belongs to the field of preparation of flotation collectors, in particular to a process for preparing granular xanthate. Background technique [0002] Xanthate, namely xanthate ROCSSNa (K), is currently the most widely used and consumed flotation collector in the mineral processing field. [0003] At present, most of the xanthates used in production are powdery xanthates. The powdery xanthates have a lot of dust pollution during preparation and use, serious waste of spilling, inconvenient use, and the stimulation of powdery xanthates. The strong odor is very strong, causing serious pollution to the environment of xanthate production plants and mineral processing plants. The domestic process of preparing granular xanthate is mainly to extrude the powdered xanthate directly synthesized by the kneader through a granulator, or add a certain amount of binder to extrude and then dry it. The binder currently reported is mainly water. Glass (Xu...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/012C07C329/14B03D101/02
Inventor 钟宏马鑫刘广义王帅曹占芳黄志强
Owner CENT SOUTH UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap