RU2031884C1 - Raw mixture for preparing mainly facing material, and a method of its preparing - Google Patents

Abstract

FIELD: facing materials. SUBSTANCE: mixture has, wt.-%: clay 25-30; blowing addition 10-15; solid milled waste of potassium manufacture - the rest. Material is carried out by roasting of articles formed from the mixture at 680-750 C that excludes melting of salt crystals of potassium manufacture for the period of blowing addition burning out. EFFECT: improved method of raw mixture preparing. 3 cl, 1 dwg, 1 tbl

Description

 The invention relates to construction and mining and can be used to make material from potash waste, and the resulting material is recommended to be used for cladding internal walls in rooms with a given humidity regime, to drain the incoming air, etc. The inclusion of potassium waste in the mixture reduces the amount of environmentally harmful and unused waste and increases the depth of processing of raw materials extracted in potash and salt mines.

 Known raw mix for the production of wall ceramics, including clay, additives and surfactants [1].

 The disadvantage of products from this mixture is the low passive moisture control in the room.

 Closest to the invention are the raw material mixture and the method of obtaining building material. The mixture includes the following components, wt.% "Plastic clay 30-70 Burnout additive 2-3 Potash waste - clay-carbonate sludge 30-70 with a chloride content of not more than 32.2%.

The process comprises mixing components molding, drying at a temperature of 70-80 ^{° C} and calcination at a temperature of 950-1000 ^{° C} [2].

 The disadvantage of the mixture and the method of obtaining material from it is low passive moisture control in the room.

 The aim of the invention is to increase the passive moisture control in the room.

The goal is achieved in that the raw mixture, including clay, a pore-forming additive and potassium waste, contains solid ground potash waste in the form of potassium salt in the following ratio, wt.%: Clay 25-30 Rock-forming additive 10-15 Solid ground potash waste production rest
In the production process of the raw material mixture containing the clay pore-forming agent and potash waste production, by molding and firing as waste potassium production using solid potassium production shredded waste as the potassium salt, and baking is carried out at a temperature of 680-750 ^{° C,} excluding melting of salt crystals of potash waste during the burn-out time of the pore-forming additive.

 The raw material mixture is prepared as follows.

 Solid ground potash waste, usually rock salt, is fed through a screen and conveyor belt to a feed storage bin. Here, in separate bunkers, there are other components of the mixture: clay, pore-forming material. For pore formation in products, wood sawdust, coal dust, peat chips or other combustible materials that burn out during firing of products can be used.

The components from the hopper leaks, which are quantitatively adjusted to the recipe of the mixture, are fed to the conveyor belt, which feeds them into the mixer. The transformation of the powder mixture into a plastic dough is carried out in a mixer, the role of which can be performed by one or more clay mixers with moistening. Then the dough enters the molding belt press and the outgoing beam is cut into blocks (bricks). The blocks are placed on the cart are supplied to dry and then to the kiln, the temperature of which was 680-750 ° ^C. The annealing time is set empirically, based on the complete burnout of the pore-forming material and the predetermined unit of strength.

 Products made from the proposed mixture in accordance with the described production method are bricks or plates with a compressive strength of 15-30 MPa. To place the material in the air supply channels, it can be made in the form of blocks of a given configuration.

 The table shows the composition of the raw mixes and product indicators.

 The drawing shows the hygrograms of the vapor-air medium in standard (without the presence of material) 1 and when this material is placed in the medium.

The analysis shows that the most active influence (dehumidification of the air) is observed with decreasing temperature (horizontal sections of the hygrograms). Thus, its use is most effective when the room temperature not exceeding 30-35 ^° C

 Using the proposed material along with high passive moisture control allows you to get a special microclimate in the room, useful for pulmonary patients, by analogy with salt mines. Further studies of the medicinal properties of this material will make it possible to specify the scope of the material for medicinal purposes.

 The material passed the stage of preliminary laboratory tests and confirmed the attainability of the goal. Along with this, the use of potash production waste for the raw mix reduces in proportion to the volume of material production the volume of waste dumps on the surface and reduces the environmental impact of these waste.

Claims (2)

 RAW MATERIAL MIXTURE FOR PRODUCING PREFERREDLY FACING MATERIAL AND METHOD FOR PRODUCING IT. 1. The raw material mixture to obtain a predominantly facing material, including clay, a pore-forming additive and potassium waste, characterized in that, in order to increase passive moisture control in the room, it contains solid ground potash waste in the form of rock salt in the following ratio of components, wt .%:
Clay - 25 - 30
Pore-forming additive - 10 - 15
Solid Ground Potash Waste - Other
2. A method of obtaining material from a raw material mixture containing clay, a pore-forming additive and potassium waste by molding and firing, characterized in that, in order to increase passive moisture control in the room, solid ground potassium waste in the form of potash is used as potash production waste salt, and firing is carried out at a temperature of 680 - 750 ^o C, eliminating the melting of salt crystals of potash waste during the time of burnout pore-forming additives.

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