Process for producing rubber reinforcing filler by utilizing papermaking waste white mud dry method
A technology of reinforcing filler and lime mud, which is applied in the field of rubber reinforcing filler, can solve problems such as complicated procedures, excessive waste liquid, and poor product quality, and achieve the effects of simple production process, large economic benefits, and low production cost
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Embodiment 1
[0027] Example 1 A process for producing rubber reinforcing filler by dry method of papermaking waste lime mud
[0028] Include the following steps:
[0029] 1. Dry the papermaking waste white mud until the moisture content is 1%. The white mud: the dry matter content of calcium carbonate is 90%, the dry matter content of sodium hydroxide is 2%, and the dry matter content of silicon dioxide is 7.2%.
[0030] 2. Put the dried papermaking waste white mud into the high-speed mixer, turn on the heating, raise the temperature of the material to 70°C, then add stearic acid in the molten state, and carry out preliminary stirring and mixing. The stirring rate is 600r / min, stirring 4min, the mixed material A was obtained. The addition of stearic acid is 1.2% of the lime mud quality.
[0031] 3. Mix titanate coupling agent and paraffin oil and stir evenly to form material B.
[0032] Stir the mixed material A in the high-speed mixer for 6 minutes, then add the material B into the mi...
Embodiment 2
[0036] Example 2 A process for producing rubber reinforcing filler by dry method of papermaking waste white mud
[0037] Include the following steps:
[0038] 1. Dry the papermaking waste white mud until the moisture content is 1.2%. The white mud: the dry matter content of calcium carbonate is 85%, the dry matter content of sodium hydroxide is 3%, and the dry matter content of silicon dioxide is 6.8%.
[0039] 2. Put the dried papermaking waste white mud into the high-speed mixer, turn on the heating, raise the temperature of the material to 76°C, then add the stearic acid in the molten state, and carry out preliminary stirring and mixing. The stirring rate is 650r / min, stirring 6min, the mixed material A was obtained. The addition of stearic acid is 1% of the quality of white clay.
[0040] 3. Mix titanate coupling agent and paraffin oil and stir evenly to form material B;
[0041] Stir the mixed material A in the high-speed mixer for 5 minutes, then add the material B i...
Embodiment 3
[0045] Example 3 A process for producing rubber reinforcing filler by dry method of papermaking waste white mud
[0046] Include the following steps:
[0047] 1. Dry the papermaking waste white mud until the moisture content is 2%. The white mud: the dry matter content of calcium carbonate is 83%, the dry matter content of sodium hydroxide is 4%, and the dry matter content of silicon dioxide is 6.3%.
[0048] 2. Put the dried papermaking waste white mud into the high-speed mixer, turn on the heating, raise the temperature of the material to 80°C, then add the stearic acid in the molten state, and carry out preliminary stirring and mixing. The stirring rate is 700r / min, stirring 5min, the mixed material A was obtained. The addition of stearic acid is 1% of the quality of white clay.
[0049] 3. Stir the mixed material A in the high-speed mixer for 4 minutes, then add the material B into the mixed material A to obtain the mixed material C. The material B is an aluminate coup...
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