Application of detoxic chromium dregs as cement admixture
A technology of cement clinker and cement, applied in the direction of cement production, etc., to achieve the effects of stable stability, good color and high strength value increase rate
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Embodiment 1
[0024] a. Add 3kg of detoxified chromium slag, 1.3kg of natural dihydrate gypsum, and 95.7kg of cement clinker into a cement mill to grind finely to obtain finished cement.
[0025] b. The physical and chemical results of the finished product: the stability is qualified, the initial setting time is 147min, the final setting time is 198min, the flexural strength is 5.8MPa / 3d, 8.6Mpa / 28d, the compressive strength is 27.6Mpa / 3d, 53.5Mpa / 28d, water-soluble hexavalent Chromium is zero.
Embodiment 2
[0027] a. Add 5kg of detoxified chromium slag, 1.3kg of natural dihydrate gypsum, and 93.7kg of cement clinker into a cement mill to grind finely to obtain finished cement.
[0028] b. The physical and chemical results of the finished product: the stability is qualified, the initial setting time is 161min, the final setting time is 205min, the flexural strength is 6.1MPa / 3d, 8.5Mpa / 28d, the compressive strength is 28.4Mpa / 3d, 52.5Mpa / 28d, water-soluble hexavalent Chromium is zero.
Embodiment 3
[0030] a. Add 9kg of detoxified chromium slag and 91kg of cement clinker into a cement mill and grind to obtain finished cement.
[0031] b. The physical and chemical results of the finished product: the stability is qualified, the initial setting time is 175min, the final setting time is 231min, the flexural strength is 6.1MPa / 3d, 8.6Mpa / 28d, the compressive strength is 29.0Mpa / 3d, 50.6Mpa / 28d, water-soluble hexavalent Chromium is zero.
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