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Process for producing mica pulp by mica paper waste material

A technology of mica paper and mica, applied in pulp beating/refining method, pulping with inorganic alkali, recycling technology, etc., to achieve the effects of strong practicability, improving economic benefits, and saving resources

Inactive Publication Date: 2009-07-01
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is: provide a kind of method that utilizes mica paper waste to produce mica pulp, to solve the reutilization problem of mica paper (board) discarded leftovers

Method used

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  • Process for producing mica pulp by mica paper waste material

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Embodiment Construction

[0013] The invention provides a method for producing mica pulp by using mica paper waste, which adopts chemical soaking to react chemically with adhesive glue to separate the adhesive glue from mica. Then use mechanical unpacking and cleaning, pulp the mica paper waste, and re-take the mica paper.

[0014] Process flow of the present invention is as shown in the figure, and concrete production comprises the following steps:

[0015] (1) Place mica paper waste in industrial caustic soda (NaOH) solution, soak at room temperature for 62-82 hours,

[0016] (2) Stir with a high-speed beater for 1 to 2 hours to decompose the soaked mica paper waste,

[0017] (3) Wash repeatedly 3 to 5 times until the pH of the washing liquid is 8 to 9,

[0018] (4) Classify the washed mica pulp, and the mica paper waste that has not been decomposed or not fully decomposed flows into the next cycle to continue soaking and decomposing, and the decomposed pulp is sent to the mica paper machine for pa...

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Abstract

The invention discloses a mica paper pulp manufacturing method utilized mica paper waste. It includes the following steps: adopting chemical dipping to separate mica from assembly glue by chemical reaction; adopting mechanism opening cleaning to pulp mica paper waste and newly manufacture mica paper. The invention has the advantages of strong practicability, waste utilization, resources saving, environment protecting, cost reducing, and economic benefit increasing.

Description

technical field [0001] The invention relates to a method for producing mica pulp by using mica paper waste. Background technique [0002] Mica is a very important non-metallic mineral, which has excellent heat resistance and insulation properties, and is widely used in various departments of modern industries. It is a very important subject to make use of pulping and papermaking technology to produce various types of mica paper and mica boards with mica fragments as raw materials, so that more than 90% of mica fragments can be comprehensively utilized. Today, mica paper manufacturing technology, large-scale integrated circuits, high-temperature plastics, and optical fibers are known as one of the four major technologies that contribute to contemporary electrical and electronics. [0003] Mica paper is made of crushed mica flakes (muscovite, phlogopite, artificial synthetic mica), which are cut into paper rolls by chemical pulping or hydraulic mechanical pulping at a slow sp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21C5/02D21C3/02D21C3/26D21D1/00
CPCY02W30/64
Inventor 朱瀛波高惠民张翼张小伟王国治
Owner WUHAN UNIV OF TECH
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