A process for softening and removing impurities of recycled old cotton

Abstract

The invention discloses a softening and impurity removing technology of recycled old cotton, and relates to the technical field of cotton processing. The technology comprises the follow steps that 1, the recycled old cotton is bleached with bleaching powder; 2, then the raw cotton is placed in a softener solution to be soaked for 3-4 hours, and then is dried in the sun; 3, the compacted raw cotton is further placed in a mixing drum with pin fins on the drum wall and stirred fully, so that the raw cotton is dispersed completely; 4, iron impurities in the cotton dispersed completely are removed through a conveyer belt, wherein a magnet is arranged on the upper portion of the conveyer belt; 5, then the cotton is exposed to the sun for 2-3 hours; 6, the cotton is cut into blocks or clumps, then the blocks or clumps are rolled slightly until the impurities of the raw cotton are all adhered to the outer sides of the cotton blocks or cotton clumps; 7, then the impurity layers outside the cotton blocks or cotton clumps are stripped. According to the method, when the cotton is first softened and then subjected to impurity removal, a physical way and a chemical way are combined with each other, so that the impunity is cleaned out, the removing speed is fast, and equipment cost can be reduced greatly.

Description

Technical field: [0001] The invention relates to the technical field of cotton processing, in particular to a process for softening and removing impurities of recovered old cotton. Background technique: [0002] For the technical field of cotton processing, the softening and impurity removal of cotton is an important process, and the recovered cotton is reprocessed. In the prior art, more mechanical equipment is generally used to carry out the steps of impurity removal. The impurities in cotton are relatively complex, including iron metal, weeds, small stones and soil, etc., and the raw cotton is relatively hard. It is difficult to remove impurities at one time by simple mechanical removal methods, because iron metal is easy to Adheres to the inside of old cotton, so it is difficult to remove even with a magnet, requiring multiple, more complex equipment, resulting in higher costs for removal. Invention content: [0003] The technical problem to be solved by the present i...

AI Technical Summary

Problems solved by technology

[0002] For the technical field of cotton processing, the softening and impurity removal of cotton is an important process, and the recovered cotton is reprocessed. In the prior art, more mechanical equipment is generally used to carry out the steps of impurity removal. The impurities in cotton are relatively complex, including iron metal, weeds, small stones and soil, etc., and the raw cotton is relatively hard. It is difficult to remove impurities at one time by simple mechanical removal methods, because iron metal is easy to Sticks to the inside of old cotton, making it difficult to remove even with magnets, requiring multiple, more complex pieces of equipment, resulting in higher costs for trash removal