Tailing steam curing brick machine: details of various production processes for tailing brick making

Tailings steam curing brick machine

1、 Process for producing cement brick from iron tailings

Iron tailings produce cement bricks, which are mainly mixed with fine tailings (SiO2 > 70%) and a small amount of aggregate and cement machinery, add an appropriate amount of water, mix evenly, press 60t under a 19.6 ~ 114.7mpa tailings steam curing brick machine, and cure after demoulding. After standard curing for 28 days, the finished cement bricks meet the requirements of No. 100 standard brick in the technical conditions of non sintered clay bricks issued by the state building materials administration.

2、 Process for producing steam cured brick from iron tailings

Tailings steam curing brick machine takes iron tailings as raw material, adds an appropriate amount of quicklime, dry mixing and mixing evenly, adds a small amount of water, presses and forms steam curing brick blank, and enters the high-pressure steam curing kettle for steam curing after static maintenance, so as to improve the strength of brick blank. After testing, the physical properties of steam curing tailings brick are good, and its standard can meet the requirements of more than 100 standard bricks.

The process is simple, no combustion, energy saving, no pollution, no waste water and waste residue. The brick produced has accurate size, clear edges and corners, neat appearance, flat brick body, consumes a large amount of tailings, protects the environment, improves efficiency and reduces cost.

3、 Process for producing sintered brick from iron tailings

Tailings and lime are used as raw materials to produce environment-friendly tailings brick through raw material treatment, mixing, pressing and sintering in kiln.

80% ~ 85% tailings are mixed with 15% ~ 20% quicklime powder in proportion, mixed and dissolved with 9% water, formed by liquid pressing tailings steam curing brick machine, dried or naturally dried before entering the kiln, with water content less than 4%, and then carbonized in the tunnel kiln. The carbon dioxide content is 20% ~ 40%, and the carbonation depth is greater than 60%. The finished product can be obtained after exiting the kiln.

The production process of this brick is simple, it is not picky about mechanical equipment and raw materials, and there are no technical problems that are difficult to master. It has tailings and limestone sites and can be mass produced.

4、 Process for producing refractory brick from lead-zinc tailings

In the production process of recovering fluorite by branch flotation, the main components of graded overflow of hydrocyclone are silica and alumina. The overflow can be used to make refractory bricks. Some 2.362mm clay clinker and slurry are added to the overflow. These raw materials are pressed and formed by tailings steam curing brick machine after mixing, dried at 80 ℃ and 120 ℃, and then burned into the final product in the kiln, The product performance meets the national standard of blast furnace refractory brick.

5、 Process for producing autoclaved brick from lead-zinc tailings

The chemical composition of lead-zinc mine tailings is relatively stable and suitable for the production of autoclaved silicate bricks. 85% lead-zinc tailings are added with 15% quicklime, an appropriate amount of water is added for primary mixing, mixed into the warehouse for digestion, and then an appropriate amount of water is added for secondary mixing. The tailings are autoclaved into finished products after natural curing. The finished brick has high strength and beautiful color. Through the test, the compressive strength is 18-21mpa, the flexural strength is 3.7-5.5mpa, the frost resistance is good, and other physical properties meet the use requirements.

6、 Technology of producing lime sand autoclaved brick from copper tailings

Copper tailings is a kind of fine sand mainly composed of quartz and more than ten kinds of minerals. Tailings and lime are used as raw materials to produce environmental protection tailings brick through batching, mixing, tailings steam curing brick machine pressing, autoclave and other processes. After inspection, the quality of lime sand brick meets the industrial standard of building materials, the appearance index is class I brick, and the technical index is higher than red brick, so its application prospect is broad.

7、 Process for producing porcelain wall tiles from gold tailings

Gold mine tailings and a small amount of local cheap clay have developed ceramic tiles in line with national standards. The production process is: mix proportion and mix with water; Grinding with grinding wheel; Block compression molding with 100t friction press; Dry with a 60min drum dryer; Flat burning in roller kiln (90min); Among them, Fangzi soil accounts for 18%, and the water content of tailings is about 8% ~ 17%. The amount of water can be adjusted according to the actual needs of production. After testing, the physical properties of tailings brick meet the relevant national standards. Compared with cement unburned brick, it has the advantages of low cost and high price, which opens up a new way for the utilization of tailings.

8、 Tungsten tailings calcified brick

Calcified brick is also called lime sand brick. Its main raw materials are tailings and lime. After being processed and crushed, lime is mixed with tailings to remove impurities, stirred with water, then put into silo for digestion, pressing and molding, and become finished products after steam curing. After testing, all indexes of the finished product meet the requirements of national standard brick No. 150 and the national radiation protection standard of building materials.

In the production process of various tailings brick making, tailings steam curing brick machine is the main equipment for its forming. It adopts hydraulic forming technology, which is practical no matter what kind of tailings. After understanding various production processes of tailings brick making, we can recommend appropriate production processes for customers according to the type of tailings.

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