Industrialization system of straw-starch modified synthetic low-cost slump-retaining water reducer and preparation method thereof
A starch modification and slump-preserving technology, applied in chemical instruments and methods, chemical industry, climate sustainability, etc., can solve problems such as high cost, non-continuous production, and difficult industrialization
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Embodiment 1
[0174] A method for synthesizing a low-cost slump-retaining water reducer by modifying straw-starch, the specific synthesis steps are as follows:
[0175] S1: Straw raw material pretreatment, the specific process is as follows:
[0176] The first step: primary crushing, fine crushing, cleaning, drying, and fine crushing of straw raw materials:
[0177] (1) Primary crushing of straw: After a certain amount of straw bales 2 to be processed are naturally air-dried, they are manually unpacked and discharged on an operation platform that is flush with the upper V-shaped feed port 302 of the primary straw crushing device 3 . Push the material into the upper cavity 305 of the straw primary crushing chamber (cover the feed port cover plate 301), and be clamped on the left and right sides of the upper cavity 305 by a pair of surfaces driven by a pair of idlers 314, 303. Among the concave and convex V-shaped roller conveyor belts 313 and 304, the main roller group 314 is driven to rota...
Embodiment 2
[0238] A method for synthesizing a low-cost slump-retaining water reducer by modifying straw-starch. The specific synthesis method is as follows:
[0239] S1: Raw material pretreatment of straw A, the specific process is as follows:
[0240] The first step: primary crushing, fine crushing, cleaning, drying, and fine crushing pretreatment of straw raw materials. Process is completely with embodiment 1;
[0241] The second step: straw powder hydrolysis pretreatment and starch mixed acid hydrolysis gelatinization pretreatment. The process is completely the same as in Example 1, the difference is that the hydrolysis catalytic acid C added in the hydrolysis process and its consumption are different, and the starch B added in the later stage and its addition are different, specifically reflected in:
[0242] Described starch B is cornstarch, consumption 8000g;
[0243] The lubricating additive is stearic acid, and the solid-to-solid ratio of straw to stearic acid=1000g:10ml.
[...
Embodiment 3
[0274] A method for synthesizing a slump-retaining concrete water reducer through modification of straw-starch, the specific synthesis steps are as follows:
[0275] S1: Straw raw material pretreatment, the specific process is as follows:
[0276] The first step: primary crushing, fine crushing, cleaning, drying, and fine crushing pretreatment of straw raw materials. Process is completely with embodiment 1;
[0277] The second step: straw powder hydrolysis pretreatment and starch mixed acid hydrolysis gelatinization pretreatment. The process is completely the same as in Example 1, the difference is that the hydrolysis catalytic acid C added in the hydrolysis process and its consumption are different, and the starch B added in the later stage and its addition are different, specifically reflected in:
[0278] Described starch B is potato starch, consumption 15000g;
[0279] The lubricating additive is a mixture of stearic acid and oleic acid each accounting for 50%, and the ...
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