Aerated concrete block has good processing performance. It can be sawed, shaved, nailed, ground, and can be threaded during the manufacturing process. It brings great convenience and flexibility to the construction. When the temperature of aerated concrete block equipment is below 600°C, the compressive strength will increase slightly.

 

　　When the temperature is around 600°C, the compressive strength is close to the compressive strength at room temperature, so the fireproof performance of aerated concrete as a building material meets the fireproof standard. From the ventilated pore structure of aerated concrete, we can see that due to the internal structure of aerated concrete, a large amount of closed gas has a large number of evenly distributed closed pores, so it has sound-absorbing properties, which is not available in general construction Materials.

 

　　The compressive strength of products produced with aerated concrete block equipment exceeds 25 kg/cm2 , which is equivalent to that of 125 clay bricks and lime sand bricks. This is due to the light weight and good overall performance of aerated concrete. It has low inertia force during earthquakes and uniform distribution of eyelets, which has the seismic resistance. This will be of great benefit to our multi-earthquake country.

 

　　According to the basic functions of various raw materials in the production process of aerated concrete blocks, they can be divided into four categories. That is: basic constituent materials, gas-producing materials, conditioning materials and structural materials. 1. The basic constituent materials are silica and calcium materials; gas-producing materials are gas-producing agents and bubble stabilizers. Conditioning materials include gas generating process conditioner and autoclave process conditioner; Structural materials include reinforcement and reinforcement preservative.

 

　　During the production of aerated concrete plants, other different auxiliary materials can be used depending on the process requirements and the specific conditions of each production plant.

 

　　During the static hardening of aerated concrete block blanks, the hardening effect differs from the non-insulating effect. If the temperature of the blank disappears rapidly, for example, if it is not insulated in the northern winter, the blank will not only be greatly affected by the hardening rate, but will also shrink and sink severely. Therefore, currently, all plants tend to use insulation and stopping equipment to ensure the speed and uniformity of the setting of the blanks.

 

　　The cutting machines used in aerated concrete plants mainly divide and visualize the aerated concrete body to meet the shape requirements of the aerated concrete product. The cutting process embodies aerated concrete, easy to shape, large size, easy to separate, flexible in appearance to meet the needs of different applications and can be mechanized by mass mechanization. It is also a different kind of aerated concrete from other concrete. Outstanding advantages.

 

Autoclave of fly ash aerated block equipment is widely used in other production projects requiring pressure steam curing. Such as high-strength gypsum, thermal insulation materials, rubber products, high-strength glass, cement pipe piles, wood, medicine, chemical and other industries, what is the purpose of autoclave? The large pressure vessel for Steam Curing Aerated concrete, lime sand brick and coal ash brick is equipped with perfect interlocking protection device, which avoids the hidden danger of misoperation to a great extent and ensures the operation of autoclave and the production of operators.

The autoclave of fly ash aerating block equipment is a steel horizontal cylindrical device, and the kettle cover of fly ash aerating brick equipment is pressed with a whole 16MnR steel plate. The kettle cover flange and kettle body flange are made of 16Mn integral forging. The kettle door is a movable quick opening structure, which is opened and closed by manual reducer. It can also be opened and closed by electric, pneumatic and hydraulic according to users.

The autoclave of fly ash aerating block equipment is equipped with valves, pressure gauges, temperature measuring elements, steam inlet and exhaust valves, sealed ball valves, drain valves and other necessary valves and instruments, and is equipped with decontamination tanks for users to choose and use. In the process flow of autoclaved silicate building products, lime crushing mill is mixed with sand or fly ash, and then mixed or wheel milled after digestion, and then brick billets of different specifications are formed by brick pressing mechanism.

Add water to grind lime and sand into slurry, add foaming agent, inject into mold frame, stand for foaming, and then cut into blocks of different specifications to make porous and light aerated blocks. There are two types of kettle door opening: side opening and up opening for users to choose. It can better adapt to the thermal expansion and cold contraction of the kettle body, and ensure the normal operation and service life of the fly ash aerated brick equipment.

  We will use two kinds of cutting methods when producing aerated concrete equipment, they are ground flip cutting machine and air flip cutting machine, which are more commonly used cutting equipment in the production line of aerated concrete equipment.

　

  In order to ensure the cutting effect of aerated concrete equipment, the development of aerated concrete equipment is a reform of the construction industry needs our staff to pay attention to several preparatory work before its cutting operations specifically what needs to be noted? To give you a detailed analysis to explain our specific preparations, that is, as follows.

　　

  1, before the ground flip cutting machine for cutting, to carry out a detailed inspection of all its components to ensure the integrity of its parts and performance is not damaged.

　　　

  2, for aerated concrete equipment ground flip cutting machine power switch is to do a detailed check to ensure that our cutting machine in the operation of the normal operation, in addition we must also ensure that the cutting machine saw blade tension and saw blade guard or baffle all presented in the state of pending production, the slightest error will lead to accidents outside of our production line equipment in the process of operation.

　　

  3, some manufacturers will also be produced at night, in order to ensure that our aerated concrete equipment a good operating environment, to have sufficient light for lighting, for the sake of not fumbling production in the dark.

　　

  4, there is an important point, aerated concrete equipment ground flip cutting machine before the operation must remember to conduct a no-load test, until the equipment does not have any doubts, before it can be officially put into formal production.

     Aerated concrete block production line project itself is environmentally friendly and efficient technology and innovation of an industrial economy; but also has a certain impact on the social environment as long as the relative adjustment is done is to meet the indicators. 

 

      As the annual output of 200,000 cubic meters of aerated concrete block production line, then the boiler room annual coal consumption of 18020t, the amount of flue gas generated about 216.24 million m3 / a, the amount of pollutants generated for soot 428.2t / a, SO2199.3t / a, the generated concentration of soot 1980mg/m3SO2921.5mg/m3, the boiler is equipped with hemp stone water bath dust collector ( Dust removal efficiency ≥ 95%, desulfurization efficiency ≥ 30%) after dust removal, boiler flue gas pollutant emissions are soot 21.4t/a, SO2 139.5t/a, emission concentration soot: 99mg/m3, SO2: 645mg/m3, and finally discharged through a 40m high chimney. After the above adjustment of the emission index will definitely not affect the local crops, residents living conditions.

 

      Secondly, dust: the dust emission point of autoclaved brick production line is one more than that of aerated concrete production line, which is the top of the warehouse of finely ground fly ash cylinder and the top of the elevator. The dust is mainly generated in the process of raw material inlet and outlet, grinding and batching, and the emission of dusty waste gas from the two lines is 416.79 million m3. The raw materials that generate dust are mainly fly ash, cement, quicklime, desulfurization gypsum, etc., and the main ingredients are SiO2 and CaO, etc. The main emission points are as follows

 

      a) The dust concentration of 18g/m3 at the top of the lime store and the top of the hoist, and the emission concentration is 30mg/m3 after setting a HMC-64 pulse single bag dust collector for treatment.

 

      b) Ball mill, mill elevator, batching hopper of batching building, dust concentration of 18g/m3, set a LPM4A-120 air shock bag dust collector after treatment, the emission concentration is 30mg/m3.

 

      c) Cement warehouse top, elevator top, dust concentration 15g/m3, set a HMC-64 pulse single bag dust collector after treatment, the emission concentration is 25mg/m3.

 

      d) Fly ash storage roof, hoist roof, dust concentration 15g/m3, set a LPM4A-120 air shock bag dust collector after treatment, the emission concentration is 25mg/m3.

 

      e) Top of desulfurization gypsum storage, top of elevator, dust concentration 18g/m3, after setting a HMC-64 pulse single bag dust collector, the emission concentration is 30mg/m3.

 

      f) The dust concentration is 15g/m3 at the top of the fine fly ash cylinder warehouse and the top of the elevator, and the emission concentration is 25mg/m3 after setting a HMC-64 pulse single bag dust collector. After the above measures, we can reduce the impact of dust on the local area, and even make relative contribution to the local agriculture.

 

       Aerated concrete block production line treatment of dust emissions program: the production plant raw materials for fly ash, cement, lime and gypsum, these raw materials in the treatment and storage and transportation process will produce a certain amount of dust, in which we have all developed effective treatment measures. In the batching section, the design sets up bag dust collectors on various powder material bins, so that the dust in the batching bins will not spill out and cause pollution to the environment. The finished product yard is equipped with spraying water pipe, which can be sprayed at any time to make the yard clean and dust-free.

 

       The solution of aerated concrete block production line to control wastewater: the main drainage is equipment and ground washing water, condensate of autoclave and domestic sewage, etc. The condensate of autoclave and equipment and ground washing water contain a small amount of production raw material particles, which are treated by sedimentation tank, and manure sewage is treated by septic tank. Only a small amount of domestic sewage is discharged into the plant drainage system through the drainage pipe, and the quality of the drainage water can be controlled within the discharge standard.

 

  The damage to the corners of the aerated concrete equipment blanks will largely reduce the product qualification rate and increase the amount of waste, summarize the causes and pay attention to them in the production process, in order to take relative measures according to local conditions.

 

  1, the hardness of the aerated concrete blanks are not uniform, thus causing the cutting, the angular cracks of the aerated concrete blanks. Longitudinal cutting or horizontal cutting steel wire go to the end of the billet, because of no support or support is not in place and the end of the billet will be broken; cutting steel wire running from the bottom up will be the upper surface of the billet corners broken.

 

  2、The spreader is damaged by bumping or squeezing the billet when turning it or moving it up and down. There is also a possibility that the mold is leaking, and the corners of the touch base plate are blocked with waste slurry or sprinkled with some dry aerated shreds, thus adhering to the blank. But these materials can not form a whole with the blank, and often fall off when cutting by the bed plate adhesion or pushed by the steel wire, so that the corners of the blank are missing. Some molds have the problem of slurry leakage and are plugged with waste slurry mud or sprinkled with some dry aerated shreds at the corners of the touch base plate, thus adhering to the blank. However, these materials cannot form a whole with the blank, and when cutting, they are often stuck by the bed plate or pushed by the steel wire and fall off, so that the corners of the blank are defective.

 

  3, during the demoulding process, if the degree of mold opening is not enough, it is possible to make the sides and corners of the billet body scratch; if the overhead crane is used for demoulding, once the operation is unstable and the mold frame is shaken, this will certainly happen to scratch the billet body; if the whole fixed mold frame is used, it is possible to crash the billet body when demoulding; in addition, if the humidity of the billet body is too high, it is easy to cause the billet body to adhere to the mold frame, so that In addition, if the humidity of the billet is too high, it is easy to cause the billet to adhere to the mold frame, which will cause damage to the upper corners of the billet during the demoulding.

 

   Fly ash aerated block equipment autoclave is widely used in other production projects that require pressure autoclave production process. Such as high-strength gypsum, insulation materials, rubber products, high-strength glass, cement pipe piles and wood, medicine, chemical industry, etc. What are the uses of autoclave? The large pressure vessel for steam-raising of aerated concrete, grey sand bricks and coal ash bricks is equipped with perfect interlocking protection device, which largely avoids the hidden danger of misoperation and ensures the operation of the autoclave and the production of the operator .

 

  The autoclave of fly ash aerated block equipment is a steel horizontal cylinder type device, and the lid of fly ash aerated block equipment is made of pressed 16MnR steel plate. The kettle cover flange and kettle body flange are made of 16Mn whole forging. The kettle door is movable and fast opening structure, which can be opened and closed by hand-operated speed reducer, or can be opened and closed by electric, pneumatic or liquid movement according to users.

 

  The autoclave of fly ash aerated block equipment is equipped with valves, pressure gauges, temperature measuring elements, steam inlet and outlet valves, sealing ball valves, traps and other necessary valves and instruments, and is equipped with a decontamination tank for users to use as an option. The process of autoclaved silicate building products is to mix lime crushing and grinding with sand or fly ash, digestion and then mixing or wheel grinding, and then made into different specifications of brick billets by the brick press.

 

  Lime and sand are ground into slurry with water, added with foaming agent, injected into the mold frame, left to foam, and then cut into different sizes of blocks, then porous, light weight aerated blocks can be made. There are two types of kettle door opening, side opening and top opening, for customers to choose. It can better adapt to the thermal expansion and contraction of the kettle body and ensure the normal work and service life of the fly ash aerated block equipment.

 

 Aerated concrete packing line can pack the finished aerated concrete block, which can save the labor cost to the greatest extent. The whole production line needs two operations to improve the production efficiency, which greatly improves the automation of aerated concrete production line and saves a lot of cost investment for investors. 

 

    Previously, aerated concrete out of the kettle are used manually out of the kettle, the efficiency is low, and the effect of packing is not very good. For example, one class needs 3-5 people for packing, now one aerated concrete packing line can complete all the task volume and the packing effect is very good. 

 

 

The whole aerated concrete packing line only needs 2 people, 1 person to operate the double-mode jig and 1 person to operate the forklift to load the finished products after packing. The specific operation process is as follows.

 

    1. The aerated concrete blocks out of the kettle are carried to the conveying table by the double-mode jig. The pallets are placed on the conveying table.

 

    2. The conveying table groups the aerated concrete blocks according to the size of the pallets, and conveys the pallets and aerated concrete blocks together to the bottom of the baler, then the baler carries out the baling process. Then it is conveyed to the finished product outlet.

 

    3. Forklift workers load and transport the packed aerated concrete blocks to the car.

 

 

For manual handling, the efficiency is very low, we will take the annual output of 150,000 cubic meters of production line to make a demonstration: our production is calculated by 300 days a year, day and night continuous operation (that is, 24 hours a day), so the calculation of a day (24 hours) the output should be 15w cubic meters / 300 days = 500 cubic meters. 1 pallet of 2.3 cubic meters, a day to beat the pallet 217 or so. Using fully automatic packing line, need packing machine 5-6 hours to complete. And the use of manual packing need 3 shifts, each shift of 3-5 people, and the use of machine packing can improve the breakage rate of 2-3% than manual packing. According to the workers' salary and the breakage rate of aerated concrete, the advantages of using packing line for aerated concrete kettle out is more than the disadvantages.