Continuous pulping equipment and pulping method for ultra-light and fine materials

A pulping and fine material technology, applied in separation methods, chemical instruments and methods, transportation and packaging, etc., to achieve the effects of no risk of dust explosion, high control precision, and small dust pollution

Active Publication Date: 2021-09-07
EAST CHINA ENG SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to avoid the shortcomings of the above-mentioned prior art, improve the slurrying efficiency of materials, ensure the quality of slurry, and solve the problem of dust pollution, the present invention provides an ultra-light fine material continuous pulping equipment and its process

Method used

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  • Continuous pulping equipment and pulping method for ultra-light and fine materials
  • Continuous pulping equipment and pulping method for ultra-light and fine materials
  • Continuous pulping equipment and pulping method for ultra-light and fine materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A kind of ultra-light and fine material continuous pulping equipment, such as figure 1 As shown, a continuous pulping equipment for ultra-light and fine materials:

[0044] Including the pulping tank 10, the top of the pulping tank 10 is provided with a top cover I11, the top cover I11 is provided with a stirring motor I12 and a feeding port I, and the output shaft of the stirring motor I12 is provided with a stirring paddle I121, The stirring blade I121 is located in the slurry tank 10, and the feed inlet I includes an ultra-light fine material inlet 131, an additive inlet 132, a process water inlet 133 and a material return inlet I136; the additive inlet 132 is used for adding additives, which can be To adjust the dispersibility of fine material in liquid, the amount of additive added is selected according to the characteristics of the slurry material.

[0045] The top cover I11 is also provided with a water pipe I134, a water pipe II135, and a water film dust collec...

Embodiment 2

[0055] A method for continuous pulping of ultra-light and fine materials, such as image 3 Shown: take the ultra-light and fine material continuous pulping equipment in embodiment 1 as the pulping equipment of this embodiment; Taking ultrafine graphite powder pulping as an example; wherein in the pulping equipment, the pulping tank 10, the buffer tank 20 The effective volume is 30m 3 , high-speed shear pump 30 delivery capacity 25m 3 / h, centrifugal delivery pump 40 delivery capacity 20m 3 / h, the qualified finished slurry delivery volume is 10m 3 / h, including the following steps:

[0056] Step (1): close valve I311 and open valve II321, and continuously add process water and sodium dodecylbenzenesulfonate solution to the pulping tank 10; the addition amount of the process water is 7m 3 / h; the mass concentration of the sodium dodecylbenzenesulfonate solution is 25%, and the addition of the sodium dodecylbenzenesulfonate solution is 0.5m 3 / h; Obtain dilute additive solu...

Embodiment 3

[0067] A method for continuous pulping of ultra-light and fine materials, such as image 3 Shown: be the pulping equipment of this embodiment with the ultra-light fine material continuous pulping equipment in embodiment 1; With ultrafine TiO 2 Take pulping as an example; wherein the effective volumes of pulping tank 10 and buffer tank 20 in the pulping equipment are 50m 3 , high-speed shear pump 30 flow rate 45m 3 / h, centrifugal delivery pump 40 flow rate 35m 3 / h, the downstream process conveying capacity is 15m 3 / h, including the following steps:

[0068] Step (1): close valve I311 and open valve II321, and continuously add process water and sodium dodecylbenzenesulfonate solution to the pulping tank 10; the addition amount of the process water is 13m 3 / h; the mass concentration of the sodium dodecylbenzenesulfonate solution is 15%, and the addition of the sodium dodecylbenzenesulfonate solution is 0.5m 3 / h; Obtain dilute additive solution;

[0069] Step (2): When ...

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Abstract

The invention specifically relates to an ultra-light and fine material continuous pulping equipment and a pulping method. It includes a pulping tank, the top of the pulping tank is provided with a top cover I, and the top cover I is provided with a stirring motor I and a feeding port I, and the output shaft of the stirring motor I is provided with a stirring paddle I. Stirring paddle I is located in the slurry tank, and the feed inlet I includes ultra-light fine material inlet, additive inlet, process water inlet and feed inlet I; the top cover I is also equipped with water pipe I, water pipe II, water pipe Membrane dust collector; the inside of the pulping tank is also equipped with a spray nozzle and a drop pipe; it also includes a buffer tank connected in series with the pulping tank; the present invention adopts the method of continuous pulping, A partial reflux operation is added to the pulping process, which makes the pulping process continuous and effectively solves the problem of unstable slurry quality caused by long pulping time, personnel errors and cumulative errors in the traditional intermittent pulping process; and the pulping material is stirred evenly for the second time , which can ensure the uniformity of the composition of the slurry material.

Description

technical field [0001] The invention belongs to the technical field of chemical industry and environmental protection, in particular to a continuous pulping equipment and a pulping method for ultra-light and fine materials. Background technique [0002] At present, there is no uniform standard for the classification of superfine materials in all countries in the world. Usually ultra-light fine material refers to micropowder with a particle size of 1 μm to 100 μm. Common ultrafine materials in industry include heavy calcium carbonate powder, bauxite, kaolin, white carbon black, graphite powder, activated carbon, gypsum powder, titanium dioxide, bentonite, etc. These ultrafine materials are important raw materials for modern industry. After modification, the superfine material can expand its application field exponentially. The modified superfine material is not only a filling material, but also an important component of the product composition, which can improve and improve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01F5/10B01F7/18B01F13/10B01F15/00B01D47/06B01F5/12B01F25/60
CPCB01D47/06B01F23/41B01F25/60B01F25/52B01F27/90B01F33/821B01F35/1453B01F35/184
Inventor 王争刚刁东侠肖立娟
Owner EAST CHINA ENG SCI & TECH
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