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Preparation method of magnesium oxide for plastic masterbatch and magnesium oxide prepared by preparation method

A technology of plastic masterbatch and magnesium oxide, applied in the field of magnesium oxide, can solve the problems of low efficiency of magnesium oxide, inability to achieve optimal performance balance in dispersibility and fluidity, high energy consumption, etc., and achieve high filtration efficiency and consistent particle size. Good performance and low energy consumption

Inactive Publication Date: 2020-09-29
河北镁神科技股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the defects that the oil absorption value, particle size, dispersibility and fluidity of magnesium oxide used in the preparation of plastic masterbatch in the prior art cannot achieve the best performance balance, and the defects of low efficiency and large energy consumption when using the prior art method to produce magnesium oxide , the present invention provides a method for preparing magnesium oxide for plastic master batches and the prepared magnesium oxide, the magnesium oxide prepared by the method of the present invention has the best performance balance in terms of oil absorption value, particle size, dispersibility and fluidity, and at the same time The preparation method is simple and easy to operate, the energy consumption is low, and it can be applied to industrial scale production

Method used

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  • Preparation method of magnesium oxide for plastic masterbatch and magnesium oxide prepared by preparation method
  • Preparation method of magnesium oxide for plastic masterbatch and magnesium oxide prepared by preparation method
  • Preparation method of magnesium oxide for plastic masterbatch and magnesium oxide prepared by preparation method

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Effect test

Embodiment 1

[0023] Embodiment one: the preparation method of magnesium oxide for a kind of plastic masterbatch provided by the present invention, used raw material magnesium hydroxide purity is 97%, comprises: (1) choose magnesium hydroxide powder raw material, raw material index (after calcining Ingredient meter):

[0024] Test items index Magnesium oxide (MgO)%≥ 97.0 (purity) Calcium oxide (CaO)%≤ 0.11 Hydrochloric acid insoluble matter%≤ 0.18 Sulfate%≤ 0.15 D50(micron)≤ 2 D90(micron)≤ 6 Iron (Fe content)%≤ 0.01 Loss on ignition%≤ 31.5 Bulk density (g / ml)≤ 0.20

[0025] (2) The magnesium hydroxide powder raw material is added into a static calciner, and the control point of the static calciner is:

[0026]

[0027] The oil absorption value is controlled at 50-70, and the crystal shape of magnesium oxide obtained after calcination is approximately spherical.

[0028] (3) The calcined magnesium oxide powder is mech...

Embodiment 2

[0030] Embodiment two: the preparation method of magnesium oxide for a kind of plastic masterbatch provided by the present invention, comprises: (1) chooses magnesium hydroxide powder raw material, raw material index (in terms of composition after calcining):

[0031]

[0032]

[0033] (2) The magnesium hydroxide powder raw material is added into a static calciner, and the control point of the static calciner is:

[0034]

[0035] The oil absorption value is controlled at 50-70, and the crystal shape of magnesium oxide obtained after calcination is approximately spherical.

[0036] (3) The calcined magnesium oxide powder is mechanically pulverized to obtain magnesium oxide powder. The powder is pre-dispersed through a single-tube blowing device, and then classified and screened according to the particle diameter of the demand side.

[0037] The magnesium oxide reactivity citric acid value range obtained in this embodiment is 863 seconds, the bulk density is 0.30g / ml,...

Embodiment 3

[0038] Embodiment three: the preparation method of magnesium oxide for a kind of plastic masterbatch provided by the present invention, comprises: (1) chooses magnesium hydroxide powder raw material, raw material index (in terms of composition after calcining):

[0039]

[0040]

[0041] (2) The magnesium hydroxide powder raw material is added into a static calciner, and the control point of the static calciner is:

[0042]

[0043] The oil absorption value is controlled at 50-70, and the crystal shape of magnesium oxide obtained after calcination is approximately spherical.

[0044] (3) The calcined magnesium oxide powder is mechanically pulverized to obtain magnesium oxide powder. Pass the powder through a single-pipe blowing device to pre-disperse the powder, then pass through grading and screening, and then pass grading and screening, and then grading and screening according to the particle diameter of the demand side.

[0045] The reactive citric acid value inte...

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Abstract

The invention discloses a preparation method of magnesium oxide for plastic masterbatch. The preparation method comprises the following steps: (1) feeding a magnesium hydroxide raw material into a static calcinator for calcination; (2) dehumidifying and cooling magnesium oxide generated after calcining in the step (1); and (3) crushing the magnesium oxide treated in the step (2). The invention hasthe advantages that the magnesium oxide obtained by the preparation method disclosed by the invention is moderate in oil absorption value, stable in particle structure, good in particle size consistency and good in dispersity; in the preparation process, the whole process is small in pollution, free of extreme conditions, low in energy consumption and suitable for large-scale industrial production.

Description

technical field [0001] The invention belongs to the technical field of auxiliary materials for plastic products, in particular to a method for preparing magnesium oxide for plastic master batches and the prepared magnesium oxide. Background technique [0002] Plastic masterbatch is a concentrate made by adding a super-normal amount of plastic additives to the resin; when manufacturing plastic products, it is not necessary to add this kind of plastic additives, just add this super-normal amount in proportion. Masterbatch is sufficient. Therefore, plastic masterbatch is a new type of special material for polymer material processing. The use of masterbatch simplifies the complex batching procedure; granulated masterbatch is convenient to measure; reduces dust flying; the masterbatch structure is ideal, which not only improves the processability of the product, but also facilitates the full dispersion of each component, preventing the agglomeration of raw materials and thus imp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F5/08C08K3/22C08J3/22
CPCC01F5/08C08K3/22C08J3/22C01P2004/32C01P2004/51C01P2004/61C01P2006/19C08K2003/222
Inventor 毕立亨邢煊翟立强孙孟勇
Owner 河北镁神科技股份有限公司