A kind of tailings powder wet mixing plastering mortar

Abstract

The invention discloses a tailing powder wet-mixed plastering mortar which is prepared from the following raw materials in mass percent via wet mixing: 5-10% of tailing powder, 60-75% of tailing manufactured sand,10-15% of cement, 0.5-1.5% of a plastic stabilizer, 0.1-0.5% of a retarder and the balance of water. The tailing powder wet-mixed plastering mortar can be used for effectively improving the resource recycling rate of the tailings so as to turn the tailings into wealth; tests show that the tailing powder can be used for improving the peaceability of mortar, improving the bonding strength of the mortar, reducing the shrinking percentage of the mortar, effectively preventing the mortar from cracking and hollowing, effectively reducing the consistency loss of the mortar and prolonging the construction operation time of the mortar. The mortar is low in production cost, stable in quality and long in construction operation time; by adopting a wet mixing technology, the fine aggregates such as the tailing manufactured sand and the like do not need to be dried, so that the energy-saving and environment-friendly green concept is met.

Description

technical field [0001] The invention belongs to the field of building materials, in particular to tailings powder wet-mixed plastering mortar. Background technique [0002] With the development of the national economy, the development scale of my country's metal mining industry is increasing day by day, and the amount of tailings discharged every year is as high as 1 billion tons. The long-term accumulation of a large number of tailings not only causes serious pollution to air, water and soil, but also occupies a large amount of agricultural land. In addition, if the management and design of the tailings pond are not good, collapse accidents will easily occur, causing casualties. For this reason, in April 2010, the Ministry of Industry and Information Technology of my country promulgated the "Special Plan for Comprehensive Utilization of Metal Tailings (2010-2015)", which clearly stated that the comprehensive utilization rate of tailings in the "Twelfth Five-Year Plan" should...

AI Technical Summary

Problems solved by technology

These technical solutions solve the problem of tailings reuse to a certain extent, but the operation time of mortar construction is short, and the utilization rate of tailings generally does not exceed 20% of its own mass

Moreover, all these technical solutions involve dry-mixed mortar. During the preparation of mortar, fine aggregates such as natural sand and tailings must be dried, which will not only consume more energy, but also increase the emission of carbon dioxide and dust. quantity

Images