ferro chrome slag
The micro-chromium iron slag is not a ferrochrome slag, but belongs to the category of ferrochrome slag. Compared with the traditional chromium iron slag calcium oxide content, the micro-chromium iron slag has good gelling effect, and the micro-chromium iron slag can be used as a building material for a long time.
Micro ferrochrome slag can be mixed with cement good effect can be used as building materials for a long time!
The micro-chromium iron slag is used as the cement admixture to make the micro-chromium iron slag cement, and the water consumption of the pseudo-consistency of the iron-iron alloy is continuously reduced with the increase of the amount of the micro-chromium iron slag, because the fineness of the micro-chromium iron slag is smaller than that of the cement particles after the micro-chromium iron slag is replaced with the cement in equal amount, the filling action of the micro-chromium iron slag and the effect of the micro-aggregate make the micro-chromium iron slag be filled in the space of the cement particles, and the middle water is replaced, so that the surface water quantity of the mixture is correspondingly increased, the lubricating effect of the cement particles is increased, and the fluidity of the slurry body is improved.
The strength of cement paste decreased obviously with the increase of the content of ferrochrome slag at early age, and the strength difference of cement paste with different content of ferrochrome slag decreased greatly after 7 days. After 3 days of hydration, the strength of cement paste with 0% content reached 59.9MPa, while the strength of cement paste with 40% micro-chromium slag cement was 36.2 MPa. The strength of the cement paste containing 30% Cr-Fe slag was 40.1 MPA, and the strength decreased by 33%. With the increase of the content of microchromic iron slag, the strength of cement paste developed faster at the later stage than that at the early stage, and the ratio of strength increase to the content of the cement paste was 0. The cement should be high. After hydration for 28 days, the cement paste strength of 30% micro-chromium slag cement has reached 70.2 MPa, which is only 10 MPA lower than that of 0% cement. Therefore, according to the relationship between the content and strength of micro ferrochrome slag, different cement content is adopted according to different technical requirements.
The content of calcium oxide in micro-ferrochrome slag is higher than that in other kinds of ferrochrome slag. The micro-ferrochrome slag has good cementitious activity and can be used as cement mixture. The cement with micro-ferrochrome slag can solidify the water-soluble Cr6 compound in the cement during the process of hardening, and the optimum content is 40%. Ferrochrome slag as cement admixture is safe and can be used as building materials for a long time!
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