Product Brief Introduction
Calcium silicate board equipment mainly uses siliceous materials, calcareous materials and other accessories as raw materials, through the rotary screen Calcium silicate board equipment mainly uses siliceous materials, calcareous materials and other accessories as raw materials, through the Hatschek process or the slurry method, through pulping, molding, steam curing, drying, sanding and post-processing, etc. A new type of building material produced by the process, calcium silicate board is divided into calcium silicate board for thermal insulation and calcium silicate board for decoration according to the raw materials. It is widely used in decoration for civil, commercial and other purposes. Flow Slurry Calcium Silicate Board Production Line Equipment: pulp processing system, pulp section, board stacking and demoulding section, autoclaving and curing section, edging, chamfering and sanding section.
Product advantages
Details Images
The main production process methods of calcium silicate board fiber cement board are as follows:
1. Flow slurry method: The principle is that the slurry is spread and dehydrated and laminated on the felt; the equipment requirements are simple and the output is low.
2. Hatschek process: The principle comes from the circular net papermaking process; the equipment requirements are high and the output is high.
The production process of the fiber cement board flow slurry method:
1. Raw material preparation
The preparation of raw materials includes wet grinding and pulping of quartz sand, crushing and digestion of quicklime, grinding and beating of wood fibers.
2. Pulping process
The wood fiber pulp diluted and thinned to meet the requirements of beating degree is pumped into the counter-flow mixer, and the metered slaked lime, cement, quartz powder, etc. are added in turn, fully mixed by the counter-flow mixer to make a certain concentration of flow slurry, and then pumped to the storage. The pulp is stored in the pulp pool for standby, and then it is homogenized by a single-disc refiner, stirred in a pre-mixing tank, and then input into the flow pulping plate making machine at a certain concentration and flow rate to enter the plate making operation.
3. Flow pulp board
The slurry flowing out of the headbox evenly is filtered and dehydrated on the running industrial felt to form a thin layer and wound on the forming drum. When the set slab thickness is reached after multiple windings, the control system is designed according to the slab. The size of the knife is automatically cut off the slab. The plate making machine adopts a forming cylinder with a diameter of 1600mm, and the slab is cut horizontally and trimmed into two standard plates. Standard slabs are stacked with a stacker, and the stacking method is one steel die and one plate.
4. Plate compaction
The formed slab is pressed by a 7000t press for 30 minutes, so that the slab is dehydrated and compacted under a high pressure of 23.5MPa to improve the strength and compactness of the plate.
5. Preconditioning and demoulding
The wet slab is pre-cured in a pre-curing kiln, and the slab is demolded after obtaining a certain strength. The pre-curing temperature is 50～70℃, and the pre-curing time is 4～5h.
6. Autoclave curing
After the slab is demolded, it is sent to an autoclave for autoclave curing for 24h, the vapor pressure is 1.2MPa, and the temperature is 190℃. During the steam curing process, the silica, calcium hydroxide and water in the slab react chemically to form tobermorite crystals and tobermorite. The quality of the hydration reaction directly affects the strength, expansion rate and moisture resistance of the calcium silicate board.
7. Drying, sanding, edging
The steamed slabs are dried on the comb dryer in the tunnel kiln, so that the moisture content of the slabs reaches the acceptance standard of not more than 10%, and the slabs can be shipped after sanding, edging and quality inspection.
Product Application
fiber cement board board use range and main purposes:
Commercial buildings: commercial buildings, entertainment venues, shopping malls, hotels
Industrial buildings: factories, warehouses
Residential construction: new housing, renovation and renovation
Public places: hospitals, theaters, stations
High-rise buildings: forced to fire, corresponding to fire extinguishers and sprinkler systems.
The main uses of fiber cement board are industrial boards such as walls, ceilings, floors, furniture, road sound insulation,sound-absorbing barriers, ship compartments and air ducts, as well as sound-absorbing walls, sound-absorbing ceilings, pouring walls, and composite wall panels. panels, etc. or the slurry method, through pulping, molding, steam curing, drying, sanding and post-processing, etc. A new type of building material produced by the process,fiber cement board is divided into calcium silicate board for thermal insulation and calcium silicate board for decoration according to the raw materials. It is widely used in decoration for civil, commercial and other purposes. Flow Slurry fiber cement board Production Line Equipment: pulp processing system, pulp section, board stacking and demoulding section, autoclaving and curing section, edging, chamfering and sanding section.
