Research on the Preparation of Baking-Free Brick Using the Tailings of Flue Gas Desulfurization of Pyrolusite Slurry

Abstract:

This paper studies the preparation of baking-free brick using the tailings of flue gas desulfurization of pyrolusite slurry, aiming to explore the optimal technological conditions. Experimental results show that the particle size of the tailings of flue gas desulfurization of pyrolusite slurry with the concentration up to 95% is below 80μm, which are the appropriate material for the preparation of baking-free bricks. "Byproduct tailings of flue gas desulfurization of pyrolusite slurry - cement cementitious materials - water" system is a relatively good ingredient program. The test results indicate that the flexural and compressive strength of the baking-free brick sample increases with the rise of forming pressure. Appropriately adding the dosage of binder could improve the flexural and compressive strength of the baking-free brick sample, but when it is added to a certain degree, the strength will decrease instead. To sum up, the optimal parameters of the baking-free brick product are shown as follows: desulfurization tailings: cementitious materials = 5:1, the forming pressure is 20 MPa, the moisture content is 10% and the natural curing time is controlled in the range of 7-28 days.

• Periodical: Advanced Materials Research (Volumes 726-731)
• Pages: 2771-2777
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.726-731.2771
• Online since: August 2013
• Authors: Zheng Zhou*, Cheng Qiu
• Keywords: Baking-Free Brick, Pyrolusite, Tailings of Flue Gas Desulfurization

References

[1] Qiu Cheng, Sun Weiyi, Ding Sanglan, Su Shijun: Environmental Protection and Circular Economy. Vol. 4(2012), p.23 (In Chinese)

[2] Ren Sumei, Chou Xiaodong, Jin Tiemin: New Building Materials. Vol. 1(1998), pp.39-40 (In Chinese)

[3] Ren Sumei, Piao Yingji, et al. Wall Materials Innovation and Energy Conservation. Vol. 6 (1997), pp .21-23 (In Chinese)

[4] Zha Jin. Research and application of road base materials --- phosphorus slag and manganese slag. Wuhan University of Technology. (2005), pp.4-5 (In Chinese)

[5] A.Abbas,M.Careasses J.P. Ollivier. The Importance of Gas Permeability In addition to the Compressive Strength of Concrete . Magazine of Concrete Research. Vol. 52 (2000), pp.1-6.

DOI: 10.1680/macr.2000.52.1.1

[6] M.Pises Frias. Recycling of silicmanganese slag as Pozzloanic material in Portland cements: Basis and engineering ProPerties.Cement and Concrete Research .Vol.36 (2006), pp.487-491.

DOI: 10.1016/j.cemconres.2005.06.014

[7] Lu Hao, Qian Jueshi, Meng Zhiliang et al. Journal of Chongqing Jianzhu University. Vol.21 (1999), pp.46-49 (In Chinese)

[8] Jiang Xiaohua, et al. Non-metallic mineral article, Vol. 1 ( 2010 ), p.14 (In Chinese)