A kind of method of using black foundry sand to produce ceramic tile bonding mortar

Abstract

The invention provides a method for producing ceramic tile bonding mortar by using black casting sand, comprising the following steps: using a crusher to break the agglomerated black casting sand into sand grains, and then removing iron through a magnetic separator, and then sending it into high Frequency vibrating machine removes the adhesive film on the surface of the black casting sand particles; the black casting sand obtained in step S1 is sent to the drum sieve for screening, and the black casting sand fine powder, black casting sand fine sand and black casting sand medium sand are separated ; Mix black casting sand fine powder, mineral activator, redispersible latex powder, hydroxyethyl methylcellulose, polycarboxylate superplasticizer in proportion and stir evenly according to parts by weight, and then transfer them to the grinding equipment for activation Grinding to prepare the ceramic tile adhesive additive; mixing the ceramic tile adhesive additive, cement, and black casting sand and fine sand in proportion according to parts by weight and stirring evenly to prepare tile adhesive mortar. The black casting sand of the invention can be fully utilized and applied to the production of ceramic tile adhesive mortar, and has remarkable economic, environmental and social benefits.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a method for producing ceramic tile bonding mortar by using black foundry sand. Background technique [0002] At present, most of the sand used in mortar factories uses natural sand, which is formed by natural weathering, water flow handling, sorting, and accumulation. According to its production source, it can be divided into river sand, lake sand, mountain sand and evolved sea sand. It is a kind of Non-renewable resources in the short term. In view of the increasing shortage of natural sand resources and rising prices, artificial sand (referring to machine-made sand and mixed sand) and industrial waste sand (referring to steel slag sand, etc.) have also begun to attract the attention of mortar factories and have certain applications. . [0003] Waste foundry sand, also known as foundry waste sand, is a kind of fine-grained solid waste secondary to the pr...

AI Technical Summary

Problems solved by technology

In recent years, my country's foundry industry has developed rapidly. However, due to the difficulty in recycling waste foundry sand and the widespread phenomenon of random stacking, it not only takes up a lot of land, but also easily causes environmental pollution and safety problems. In addition, foundry companies have to pay land acquisition fees, Freight and landfill costs, etc., which increase the production cost of the enterprise, so the secondary utilization of foundry waste sand, turning waste into treasure is the fundamental way to solve the problem of foundry waste sand

[0004] Although my country has made some progress in the recycling of waste casting sand for secondary reuse, there are still three problems: 1. It cannot be used dry and squeezed out; 2. When casting sand is used, add water glass or resin and other colloids for casting In use, if the colloid on the surface of the waste casting sand is not optimized, it is difficult to get the best use of it; 3. It is processed by washing, and the remaining water will pollute the water resources; 3. In concrete and mortar Simply added, the strength of concrete and mortar will decrease, water retention will decrease, fluidity will decrease, slump and bleeding speed will increase

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