Waste and old film-coated paper recycling preparation process

[0029] Example 1:

[0030] A process for recycling and preparing waste coated paper includes the following steps:

[0031] Step 1: After removing the impurity of the coated paper, put it into the oven to remove the film, so that the coating film on the coated paper will melt and condense;

[0032] Step 2: Put the film-removed coated paper into boiling water for cooking, the boiling water is weakly alkaline boiling water, the added reagent is calcium hydroxide aqueous solution, the concentration of calcium hydroxide is 1.5mol / L, and it is removed after cooking for 10 minutes;

[0033] Step 3: Drain the removed coated paper with water and add it to a pulverizer for pulverization. The particles of the pulverized coated paper are 100 meshes, and the time for ultrasonic vibration to disperse the pulp particles is 12 minutes;

[0034] Step 4: After sterilizing, the pulp mixture is allowed to stand for 1 hour, and then filtered with a fine screen to obtain the final pulp, which is poured into a

[0035] Example 2:

[0036] A process for recycling and preparing waste coated paper includes the following steps:

[0037] Step 1: After removing the impurity of the coated paper, put it into the oven to remove the film, so that the coating film on the coated paper will melt and condense;

[0038] Step 2: Put the film-removed coated paper into boiling water for cooking, the boiling water is weakly alkaline boiling water, the added reagent is calcium hydroxide aqueous solution, the concentration of calcium hydroxide is 2mol / L, and it is removed after cooking for 11 minutes;

[0039] Step 3: Drain the removed coated paper with water and add it to a pulverizer for pulverization. The particles of the pulverized coated paper are 140 meshes, and the time for ultrasonic vibration to disperse the pulp particles is 15 minutes;

[0040] Step 4: After sterilizing, the pulp mixture is allowed to stand for 1.2 hours, and then filtered with a fine screen to obtain the final pulp, which is poured into

[0041] Example 3:

[0042] A process for recycling and preparing waste coated paper includes the following steps:

[0043] Step 1: After removing the impurity of the coated paper, put it into the oven to remove the film, so that the coating film on the coated paper will melt and condense;

[0044] Step 2: Put the film-removed coated paper into boiling water for cooking, the boiling water is weakly alkaline boiling water, the added reagent is calcium hydroxide aqueous solution, the concentration of calcium hydroxide is 2.4mol / L, and it is removed after cooking for 12 minutes;

[0045] Step 3: Drain the removed coated paper with water and add it to a pulverizer for pulverization. The particles of the pulverized coated paper are 180 meshes, and the time for ultrasonic vibration to disperse the pulp particles is 20 minutes;

[0046] Step 4: After disinfection, the pulp mixture is allowed to stand for 1.4 hours, and then filtered with a fine screen to obtain the final pulp, which is poured in