电解锰渣对热焖钢渣活性的硫酸盐激发

Abstract

Abstract:

Electrolytic manganese residue and cement clinker were selected as stimulating agents and the influence of the amount of electrolytic manganese residue on the activation of hot-stewed steel slag was mainly studied,and the effect of electrolytic manganese residue on the microstructure of hydration products and cement stone were analyzed by XRD and SEM. The result showed that when the content of electrolytic manganese slag was 12%（mass fraction）,the effect of sulfate stimulation on clinker heat-stewed slag system was better,it accelerated the hydration rate of steel slag and greatly improved the early strength and late strength of steel slag cementitious materials.However,it had little effect on the type of hydration products; compared with unincorporated activator group,the flocculation of the steel slag cementitious material after excited mainly consisted of flocculent C—S—H gel and a small amount of AFt crystal,each hydration product had a good match and forming a dense structure,so that the entire system obtained higher strength.

Key words: electrolytic manganese residue, heat-stewed steel slag, sulfate activation, hydration product

CLC Number:

TQ125.14

Zhou Hongyan,Chen Ping,Zhao Yanrong,Liu Rongjin,Wei Jiazhan. Sulfate activation of electrolytic manganese residue on heat-stewed steel slag activity[J]. Inorganic Chemicals Industry, 2019, 51(5): 66-69.

Figures/Tables 6

References 13

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原料	w （SiO₂）	w （Al₂O₃）	w （Fe₂O₃）	w （CaO）	w （MgO）	w （SO₃）	烧失量	w（其他）
熟料	22.04	5.73	2.86	62.05	1.33	2.91	1.50	3.10
热焖钢渣	16.46	6.20	20.11	43.46	6.83	—	0.24	6.70
电解锰渣	30.79	9.18	3.13	7.68	1.76	18.24	23.60	5.62

编号	原料配比/%			流动度/mm	抗折强度/MPa			抗压强度/MPa
编号	w（电解锰渣）	w（钢渣）	w（水泥）	流动度/mm	3 d	7 d	28 d	3 d	7 d	28 d
1	0	0	100	212	5.1	7.3	8.2	26.3	37.1	50.2
2	0	40	60	203	3.2	4.8	6.5	14.1	23.1	38.6
3	6	34	60	190	3.8	5.7	6.7	15.3	25.5	45.1
4	8	32	60	186	4.1	6.1	7.1	17.2	28.2	45.0
5	10	30	60	182	4.4	6.5	7.8	20.4	30.5	46.9
6	12	28	60	180	5.0	7.1	8.0	23.9	35.3	50.5
7	14	26	60	176	4.8	6.8	7.9	22.5	34.1	45.4

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Inorganic Acid-Base-Salt Committee of CIESC

Sulfate activation of electrolytic manganese residue on heat-stewed steel slag activity

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