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Papermaking filler pretreatment device and treatment method

A pretreatment device and paper-making filler technology, which is applied in the field of papermaking, can solve the problems of reducing paper strength performance, poor paper evenness, weak bonding, etc., and achieve the effect of improving uniformity, tensile strength, and contact area.

Active Publication Date: 2019-08-09
苏州赛维科环保技术服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the fluffy filler flocculation is weakly bonded to the paper fiber, which greatly limits the further improvement of the paper strength performance; in addition, if the pre-flocculation size of the filler is too large, it will lead to poor paper evenness, which will Reduce the strength properties of the paper
[0004] Filler coating pre-flocculation technology is a novel filler modification technology proposed on the basis of filler pre-flocculation technology that has been reported, combined with coating technology; but in the prior art, modified fillers need to be dried, etc. Relief, the prepared modified filler cannot be directly used for filling

Method used

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  • Papermaking filler pretreatment device and treatment method
  • Papermaking filler pretreatment device and treatment method

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Embodiment 1: papermaking filler pretreatment method, adopts the processing method described in above-mentioned equipment to comprise the following steps:

[0029] Step a, the filler is diluted, light calcium carbonate is filled in the first static mixer 4, water is pumped into the first static mixer 4 from the water tank 2, pre-diluted in the first static mixer 4, and passed through the first The static mixer 4 is delivered to the reactor 5, fully diluted in the reactor, and the dilution concentration of the filler is 30%;

[0030]Step b, filler coating, the chelating titanate coupling agent is pumped into the first static mixer 4 from the first drug box 31 and enters the reactor 5, and the light calcium carbonate and chelating titanium The ester coupling agent is fully mixed, and the light calcium carbonate is coated by the chelating titanate coupling agent. The amount of the chelating titanate coupling agent is 0.2% of the mass of the filler. Shear reaction for 3 mi...

Embodiment 2

[0035] Embodiment 2: papermaking filler pretreatment method, adopt the processing method described in above-mentioned equipment to comprise the following steps:

[0036] Step a, the filler is diluted, titanium dioxide is filled in the first static mixer 4, water is pumped into the first static mixer 4 from the water tank 2, pre-diluted in the first static mixer 4, and passed through the first static mixer 4 is transported to the reactor 5, fully diluted in the reactor, and the dilution concentration of the filler is 25%;

[0037] Step b, filler coating, the chelating titanate coupling agent is pumped into the first static mixer 4 from the first medicine box 31 and enters the reactor 5, and the titanium dioxide is coupled with the chelating titanate The coupling agent is fully mixed, and the titanium dioxide is coated with a chelating titanate coupling agent. The amount of the chelating titanate coupling agent is 0.25% of the mass of the filler, and the shear reaction is perfo...

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Abstract

Belonging to the technical field of papermaking, the invention in particular relates to a papermaking filler pretreatment device and a treatment method. The device includes a first static mixer, a reactor and a second static mixer that are communicated in order by a charge pipe, the outlet of the reactor is equipped with a filler classification apparatus, which consists of a multi-stage vibrationscreen, a particle size detection apparatus and an ash content determinator. The treatment method adopting the device includes: filler dilution, filler coating, small particle size filler re-coating,pretreated filler pump-out, filler particle size correction and oversized filler recycling. The device has a simple structure and is convenient to use, the filler particles are fully coated with a flocculant, and the filler particle size is effectively adjusted. The filler treated by the device provided by the invention has good particle fineness and uniformity, thus enhancing the combination strength of the flocculant and particles, improving the retention rate of the papermaking filler on paper stock, increasing the ash content of base paper and lowering the production cost.

Description

technical field [0001] The invention belongs to the technical field of papermaking, and in particular relates to a papermaking filler pretreatment device and a treatment method. Background technique [0002] Papermaking filler is a kind of white pigment with fine particles. It is the second most used raw material in papermaking after pulp fiber, and its usage can account for 20%-40% of the paper material components. Paper filling can alleviate the pressure of fiber resource shortage, effectively reduce the raw material cost of papermaking, improve the surface performance and printing effect of paper, and increase the economic value of paper. However, with the traditional filling process, due to the lack of binding force between the filler and the fiber, the higher the filler content in the paper, the greater the impact on the binding force between the paper fibers, resulting in a more obvious decline in the strength of the paper; The increase of filler content generally lea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/02C09C3/08C09C3/10D21H17/00D21H17/69
CPCC09C1/021C09C3/006C09C3/08C09C3/10D21H17/69D21H17/73
Inventor 邱振权
Owner 苏州赛维科环保技术服务有限公司
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