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Building mortar taking gold ore tailings as full aggregate and preparation method thereof

A technology of gold mine tailings and mortar, which is applied in the field of building materials, can solve the problems of reduced strength, small tailings particle size, and increased shrinkage of mortar, and achieve the effects of improved shrinkage and strength, reduced production costs, and reduced mining

Active Publication Date: 2021-01-01
陕西宏城矿业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] When using tailings instead of all construction sand to prepare construction mortar, due to the small particle size and large specific surface area of ​​the tailings, the mixing water consumption of the construction mortar will increase greatly, thereby increasing the porosity and reducing the strength of the hardened construction mortar.
[0012] 2. The soil content in the tailings exceeds the standard
Especially the soil in powder form is difficult to separate and is a harmful component in the preparation of construction mortar. It not only increases the water consumption of the mortar, but also increases the shrinkage of the mortar and deteriorates the cohesive force.
[0014] 3. The tailings particles have sharp edges and corners
So far, there have been no reports on the large-scale application of tailings to replace all aggregates in construction mortar

Method used

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  • Building mortar taking gold ore tailings as full aggregate and preparation method thereof
  • Building mortar taking gold ore tailings as full aggregate and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0051] The present invention also relates to a method for preparing the construction mortar with gold mine tailings as the total aggregate. The method includes the following steps: the materials and their dosage are shown in Table 1.

[0052] Step 1: First, sieve the tailings to remove the mud, then mix and heat evenly with 1# surface treatment agent at 70-80°C and keep it for 1 hour, then add 2# surface treatment agent and continue mixing and heating for 1 hour to obtain the surface treated tailings;

[0053] Step 2: Mix and stir the polycarboxylate high-efficiency water reducer, thickener and air-entraining agent to completely dissolve the solid particles to obtain a composite admixture.

[0054]Step 3: Mix the mortar mixing water and the composite admixture liquid evenly to obtain an aqueous admixture solution;

[0055] Step 4: Mix the cementitious material and the tailings treated on the surface evenly in a forced mixer to obtain dry tailings mortar;

[0056] Step 5: Add...

Embodiment 2

[0058] The present invention also relates to a method for preparing the construction mortar with gold mine tailings as the total aggregate. The method includes the following steps: the materials and their dosage are shown in Table 1.

[0059] Step 1: First, sieve the tailings to remove the mud, then mix and heat evenly with 1# surface treatment agent at 70-80°C and keep it for 1 hour, then add 2# surface treatment agent and continue mixing and heating for 1 hour to obtain the surface treated tailings;

[0060] Step 2: Mix and stir the polycarboxylate high-efficiency water reducer, thickener and air-entraining agent to completely dissolve the solid particles to obtain a composite admixture.

[0061] Step 3: Mix the mortar mixing water and the composite admixture liquid evenly to obtain an aqueous admixture solution;

[0062] Step 4: Mix the cementitious material and the tailings treated on the surface evenly in a forced mixer to obtain dry tailings mortar;

[0063] Step 5: Ad...

Embodiment 3

[0065] The present invention also relates to a method for preparing the construction mortar with gold mine tailings as the total aggregate. The method includes the following steps: the materials and their dosage are shown in Table 1.

[0066] Step 1: First, sieve the tailings to remove the mud, then mix and heat evenly with 1# surface treatment agent at 70-80°C and keep it for 1 hour, then add 2# surface treatment agent and continue mixing and heating for 1 hour to obtain the surface treated tailings;

[0067] Step 2: Mix and stir the polycarboxylate high-efficiency water reducer, thickener and air-entraining agent to completely dissolve the solid particles to obtain a composite admixture.

[0068] Step 3: Mix the mortar mixing water and the composite admixture liquid evenly to obtain an aqueous admixture solution;

[0069] Step 4: Mix the cementitious material and the tailings treated on the surface evenly in a forced mixer to obtain dry tailings mortar;

[0070] Step 5: Ad...

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Abstract

The invention provides a building mortar taking gold ore tailings as a full aggregate, and a preparation method thereo. The building mortar is composed of a cementing material, gold ore tailings subjected to surface treatment, a composite additive and water. The invention also relates to a preparation method of the building mortar. The water absorption performance and angularity of the gold ore tailings are changed by surface treatment, raw material selection and proportion design of the gold ore tailings, so that the building mortar can be prepared by adopting the gold ore tailings as a fullaggregate, the water demand, workability, contractibility and strength of the mortar are improved, and the requirements of general constructional engineering are met. Meanwhile, a new way is opened upfor large-scale utilization of the solid wastes, namely the gold ore tailings. Therefore, environmental protection is facilitated, exploitation of natural sandstone is reduced, and meanwhile the production cost of the building mortar can be reduced.

Description

technical field [0001] The invention belongs to the technical field of building materials; in particular, it relates to a preparation method of building mortar using gold mine tailings as a complete aggregate. Background technique [0002] Construction mortar is one of the main materials used in civil engineering. With the progress of my country's basic construction projects, construction mortar will always maintain a high demand. [0003] Sand and gravel aggregate has always been an essential raw material for the preparation of construction mortar. However, due to the requirements of environmental protection, natural sand and gravel aggregates in many places can no longer be mined. This not only led to a sharp increase in the price of aggregates required for construction mortar projects, but also increased the cost of construction projects, and there was a shortage of aggregates in many places, which affected the smooth progress of infrastructure projects. [0004] Tailin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B20/02
CPCC04B28/04C04B20/023C04B2201/20C04B2201/50C04B18/12C04B24/383C04B2103/302C04B24/16C04B18/08
Inventor 刘开平贾旭芝孙志华杨振刘竞怡温久然
Owner 陕西宏城矿业科技有限公司
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