Pulping method used for producing kraft paper from recycled waste paper
A technology for kraft paper and waste paper, applied in the direction of paper recycling, recycling technology, cellulose pulp post-processing, etc., can solve the problems of low fiber utilization rate, complex pulping method, high production cost, and achieve high fiber utilization rate, strengthen Tensile strength and other mechanical properties, effect of improving fiber quality
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[0020] The following descriptions are only preferred embodiments of the present invention, and therefore do not limit the protection scope of the present invention.
[0021] The pulping method of using recycled waste paper to produce kraft paper includes the following steps:
[0022] 1) Waste paper pulping step, selecting waste paper as raw material for making kraft paper;
[0023] 2) Feed the recycled waste paper into a cutting machine to cut the waste paper into blocks, and use the magnetic separation equipment to separate the magnetic materials contained in the block waste paper;
[0024] 3) Send the waste paper raw materials from which the magnetic materials have been removed to the pulper for pulping, control the volume ratio of the raw materials to water, and after obtaining the primary slurry, pass the magnetic separation equipment to separate the magnetic materials contained in the primary slurry;
[0025] 4) Transfer the primary slurry from which the magnetic material has been ...
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