KR810001740B1 - Process for preparing of construction materials - Google Patents

Abstract

feldspar and clay is kneaded in an equal amount with 12 % salt solution, thereof this mixture is calcined at 800≰C, and finely ground over 150mesh; three mixes 20-30 % consisted of sand, fly ash and feldspar mixed with an equal amount, feldspar 50-55 % and clay 20-25% are mixed and kneaded with said finely ground calcination and 12 % salt solution; and with this final mixture construction materials are formed and calcined at 900≰C after dried.

Description

Manufacturing method of building materials

The present invention has a large amount of buried in Korea, and mixed with irregularities such as sand, clay, etc. It is unsuitable for the use of pure feldspar to produce plastic moldings, such as bricks, tiles, tiles, etc. The mixture of feldspar and clay was kneaded with salt water at 800 ° C, and a hard aggregate such as sand fry gangue was added to the unbaked feldspar and clay mixture, and the mixture was kneaded with brine by a known molding machine. The present invention relates to a method for producing a building material which is dried in a carbon dioxide gas furnace at 100 ° C and calcined at 900 ° C.

Conventional building materials are made of cement and earth plastics, but all have pores, so they have a substrate that absorbs moisture, so the bond state easily collapses and causes freezing. will be.

Particularly, in the case of soil material, a means of removing the pores of the surface by glazing on the surface of the primary fired material and performing secondary firing may be complicated, but the manufacturing process is cumbersome, complicated, and consumes fuel. In the case of making a smooth glaze, there is a defect in that the adhesion with cement mortar or soil mortar for adhesion is impaired in construction.

The present invention has been studied to remove these defects and described as follows by dividing them by process.

[Manufacture process]

[First step plastic body manufacturing]

Mixing the same amount of feldspar and clay with 12% brine and strengthening the affinity between feldspar and clay through the mediation of salt (NaCl) to enrich plasticity and calcining it at 800 ℃ Sodium feldspar (Na ₂ OAl ₂ O ₃ · 6Si O ₂ ) is formed between salt, feldspar, and clay, which is a nonabsorbable, solid sinter that is sufficiently melted even at low temperatures below 1000 ° C and then pulverized to 150 mesh or more. When firing separately from other materials, firing is carried out by mixing the same amount of known aggregates such as sand, frying, gangue, etc., which have a higher melting temperature and less shrinkage than feldspar or clay. Possession.

[2nd process molding body composition]

When 20-30% of the calcined material of the first process is mixed with 50-55% of unbaked feldspar and 20-25% of clay and kneaded with 12% of brine, the mixture of feldspar and clay alone has poor plasticity and adhesiveness. The salt water enhances the affinity, so that plasticity and adhesiveness are enhanced, so that molding is easy. When the plastic molding of bricks, tiles, tiles and the like is formed at a pressure of 250Kg / cm ^{2 with} a known molding machine, the surface becomes a smooth molding.

[Third step firing step]

The molded article molded in the second step is put into a drying furnace containing carbon dioxide gas of 100 ° C. or more, dried for at least 8 hours, and then gradually heated to 900 ° C. to complete firing.

To explain the effect on the above process, aluminum silicate by the hydrocurable reaction between the aluminum oxide (Al ₂ O ₃ ) component and silicon oxide (SiO ₂ ) component constituting the feldspar, clay and aggregate Heated carbon dioxide promotes the formation of solidified high-molecular-weight bonds, which quickly produces a hardened, dry molded product, which is placed in a known firing furnace and heated slowly to 900 ° C for sintering. Irregular phenomena due to the difference in shrinkage between the mixtures are progressed during the firing process toward the center of the molding. At this time, the aggregate inside the molding acts as an aggregate that suppresses the shrinkage and prevents deformation. Aggregates are less prone to contraction and protrude while feldspar and clay are constricted As it is too large, there is a dent, so that it forms a surface like a coarse sand brick, and when it is constructed, it has a function to fight against cement mortar or earth mortar for bonding.

On the other hand, calcite and clay are mixed and fired, and then pulverized and added to more than 150 mesh to lower the melting temperature during firing, and no bubbles are generated even when melted. By reducing the bubble phenomenon inside the molding resulting from the loss of the film to the surface acts to create a solid sintered state that makes the film non-hygroscopic.

The present invention is a low-temperature firing of less than 1000 ℃ to form a film on the surface of the non-hygroscopic and by the use of a number of aggregate projections are good mortar adhesion when used by the productivity is improved and beautiful, there is no fear of freezing, bricks, tiles, roof tiles, etc. It is a revolutionary invention that provides building materials.

EXAMPLE

Kneaded feldspar and clay with 12% brine, calcined at 800 ℃, pulverized at 150 mesh or more, and equally mixed with other aggregates such as sand, frying, gangue, etc. 20-30% and feldspar 50- After mixing 55% and clay 20-25%, kneading with 12% brine and forming the building materials at 250kg / cm ² , drying them in a carbon dioxide injection drying furnace heated at 100 or higher for 8 hours and slowly heating to 900 ℃ to complete the firing. Made construction materials.

Claims (1)

Kneading of feldspar and clay with 12% brine, calcining at 800 ℃, pulverizing at 150 mesh or more, and mixing an equal amount of separate sand frying, gangue, etc. 20-30%, feldspar 50-55% and clay 20-25% mixing and kneading with 12% brine to form a building material, and drying and firing at 900 ℃ method of manufacturing a building material.