Sfc cementitious block and production method thereof

Abstract

According to an SFC cementitious block and a manufacturing method thereof provided by the invention, carbon dioxide caused by traditional baking bricks can be effectively reduced, three industrial byproducts such as F-grade fly ash, furnace stone powder and CFBC ash are recycled, and a large amount of hoarding problem is improved. The SFC cementitious block mainly comprises the following components: furnace stone powder, F-grade fly ash and CFBC ash.

Description

technical field [0001] The invention relates to a cemented block and a manufacturing method thereof, in particular to a SFC cemented block and a manufacturing method of the SFC cemented block made of SFC cement-free cementing powder. Background technique [0002] Circulating Fluidized Bed Combustion Technology (CFBC) is a desulfurization manufacturing power generation technology that burns petroleum coke and adds limestone to reduce excessive sulfur oxide emissions caused by burning petroleum coke with high sulfur content. The most common powdery industrial by-product is CFBC ash, which has fine particles and high gypsum content. [0003] CFBC's annual production of by-product lime is about 800,000 metric tons, which creates a large stockpiling problem. Past studies have shown that CFBC by-product lime can excite Pozzolanic materials (such as hearth stone powder) and generate strength through hydration reactions, but adding CFBC by-product lime often faces volume expansion ...

AI Technical Summary

Problems solved by technology

[0003] The CFBC by-product lime production is about 800,000 metric tons per year, which creates a large stockpiling problem

Past studies have shown that CFBC by-product lime can excite Pozzolanic materials (such as hearth stone powder) and generate strength through hydration reactions, but adding CFBC by-product lime often faces volume expansion (excessive ettringite) and long setting time (gypsum Retarding), poor durability and other issues

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