一种渣土免烧砖及其制备方法

High-density, high-strength slag-soil non-fired bricks are prepared by using a high-tonnage static pressure brick machine and a disc roller mill, which solves the problems of low slag utilization rate and insufficient strength, realizes efficient recycling of slag resources, and enhances market competitiveness.

CN117985974BActive Publication Date: 2026-07-17SHENNENG ENVIRONMENTAL TECH CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHENNENG ENVIRONMENTAL TECH CO LTD
Filing Date
2024-01-31
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing technologies for non-fired bricks made from slag have low slag utilization rates and low strength, making them difficult to apply on a large commercial scale, and their production costs are high.

Method used

High-tonnage static pressure brick making machine is used to press the bricks under ultra-high forming pressure of 50-80MPa. Combined with disc rolling ball milling to remove the sharp edges of the particles, soil stabilizer and active cementitious material are used to modify the slag soil to prepare high-density and high-strength slag soil non-fired bricks.

Benefits of technology

It increases the utilization rate of construction waste to 93.00%, with a density of up to 2.00-2.25 g/cm3, a strength of 20.1-30.2 MPa, low water absorption, and strong market competitiveness, realizing the large-scale recycling and resource utilization of construction waste.

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Abstract

本发明公开了一种渣土免烧砖及其制备方法,属于建筑材料与环境工程技术领域。制备方法包括将原状渣土进行预处理,向半干渣土细粉料中喷洒土壤固化剂并搅拌均匀,将活性胶凝材料和改性渣土细粉料均匀混合,将粉末混合料装入模具中,以50~80MPa高成型压力将粉末混合料在模具中压制成高致密块体;将高致密块体进行破碎、打磨,随后筛分分级处理;称取不同粒径物料并搅拌均匀后将颗粒粉末混合料装入模具,在模具中压制成渣土砖坯体;将渣土砖坯体静置养护,得到渣土免烧砖。本发明制备渣土免烧砖与传统渣土免烧砖相比,渣土利用率高、致密度高、强度高、吸水率低,作为新型墙体材料,体现出较强市场竞争力,实现渣土大批量循环再生资源化利用。
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