Mix CMC directly with water to prepare a paste glue, and then use it for standby. When configuring CMC paste, first add a certain amount of clean water into the batching tank with the mixing device. When the mixing device is turned on, sprinkle CMC slowly and evenly into the batching tank, and keep stirring, so that CMC and water can be completely fused and CMC can be fully dissolved. When dissolving CMC, the reason why CMC should be evenly spread and continuously stirred is "to prevent the problems of agglomeration, agglomeration and reduction of CMC dissolution when CMC meets with water", and to improve the dissolution rate of CMC. The mixing time and the time for complete dissolution of CMC are not the same. They are two concepts. Generally speaking, the mixing time is much shorter than the time required for complete dissolution of CMC. The time required for both depends on the specific situation.
The basis for determining the mixing time is that when CMC is evenly dispersed in the water and there is no obvious large lump-like object, the mixing can be stopped, so that CMC and water can permeate and blend with each other in a static state.
The basis for determining the time required for complete dissolution of CMC is as follows:
(1) CMC and water are completely bonded, and there is no solid-liquid separation between them;
(2) The mixed paste is uniform and the surface is smooth;
(3) The color of the mixed paste is close to colorless and transparent, and there is no granular object in the paste. It takes 10-20 hours from the time when CMC is put into the batching tank and mixed with water to the time when CMC is completely dissolved.
