Environment-friendly high-volume tailing unfired non-steamed brick and manufacturing method thereof

Abstract

The invention belongs to the technical field of building materials and particularly relates to an environment-friendly high-volume tailing unfired non-steamed brick and a manufacturing method thereof. Raw materials comprise a harmless treatment agent, cement, tailing sand and water. The raw material are screened, mixed, aged and mixed again and undergo dry pressing forming and natural curing to manufacture the environment-friendly high-volume tailing unfired non-steamed brick according to a process. The harmless treatment agent is a composite material made of magnesium chloride, quicklime, gypsum powder, calcium chloride, aluminum sulphate, silicate and silica fume and the like with the fineness of 400 meshes, and the cement is of a PO42.5 type. The environment-friendly high-volume tailing unfired non-steamed brick is characterized by comprising, by weight percentage, 2-6% of harmless treatment agent, 5-10% of cement, 80-85% of tailing sand and 5-8% of water. After long-term use, the environment-friendly high-volume tailing unfired non-steamed brick avoids wall bulging or dropping of a wall painting layer; the compressive strength of the environment-friendly high-volume tailing unfired non-steamed brick is also greatly improved; the problem that white crystal substances are separated out of the surface of a brick body is solved through the deep harmless treatment of tailings; and the consumption of the tailings through single brick bodies is improved, and the environment-friendly high-volume tailing unfired non-steamed brick is environmentally friendly.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to an environment-friendly high-volume tailings non-burning and non-steaming brick and a manufacturing method thereof. Background technique [0002] Tailings is a by-product of mine resource development, which refers to unutilized solid waste discharged after mining. At present, tailings are mostly disposed of in natural accumulation methods and stored in tailings ponds, which not only consumes funds for the construction of the reservoir, invades land, destroys vegetation, pollutes the environment, but also easily induces landslides, debris flows and other geological disasters, causing safety accidents. Therefore, the development and utilization of tailings resources can not only save resources and protect the environment, but also bring huge economic benefits. At the same time, the amount of tailings consumed by a single brick is generally below 60% in the t...

AI Technical Summary

Problems solved by technology

At the same time, the amount of tailings consumed by a single brick is generally below 60% in the tailings bricks made by the non-steaming and non-burning processing method in the past; at the same time, although the method of using limestone to deal with the harmful substances in the tailings, but If the treatment is not thorough, white crystals will be precipitated on the surface of the brick body after a period of use, which will cause problems such as bulges, bulges, or peeling off of the wall paint layer on the wall surface using this type of brick.