1. Must use corn from Northeast China, Xinjiang, etc. It is not available for corn in Henan, Hebei, Shandong, Shanxi and south of the country. Before the corn is crushed, it must pass the drum cleaning sieve (two-layer sieve) to screen out the broken grains. Not full of grain and dust.
2, the selected corn (can be mixed with some fresh broken rice) and the first crushing of soybean meal should not be too fine, too thin will lead to the first granulation difficult or impossible to granulate, while the raw materials are roughly mixed according to the specified ratio After the first granulation.
3, the first granulation steam temperature is as high as possible (90 degrees or more) to ensure the full mixing and ripening of raw materials and steam; the second steam granulation, the temperature should not be too high, not more than 60 degrees to avoid possible Loss of part of the nutrients caused; compression ratio of the ring mold: 5:1.
4. The core material must be fed from the small feed port or directly into the mixer. It must be injected in the middle of the feed to ensure that the core material can completely enter the mixer. Because of the lottery, sugar and lactose, the mixing time It should be a little longer. Before the production of finished products, the pulverized corn must be used for washing to ensure that there will be no residual materials in the equipment; the color of the finished products should be uniform, and after being approved by the quality inspector, the packaging should be carried out as required.
5. The loss rate of the finished product should be less than 0.5%, and the moisture content after granulation cooling: â‰¤12.5%.
6, all raw materials containing fats, protein raw materials should be the freshest, the finished product of malondialdehyde (TBA) should be â‰¤ 2
Appendix I granulation process main parameter control table
Conditioner: its current should be strictly controlled according to equipment requirements
Rotation speed: 300-400 rev / min (experience value: the speed is basically 1/3 of the original feed speed of the original production of the equipment)
Ring die aperture (first/second time): 3.5-5.5/2.0-2.5mm (teaching 1.8-2.2mm)
For the first granulation, the old ring mold with the largest pore diameter should be used as much as possible, but the compression ratio is not limited but should be as small as possible
The first granulated steam is as water-free as possible!
The compression ratio of the second granulation ring mold: 5:1 (or 4:1 depending on the hardness of the finished product), the compression ratio is too high, the particles are too hard, and the water smelting is not good. Grain length: 5-8mm.
The second granulated steam is as much water as possible!
Steam temperature: the first time â‰¥ 90 Â° C (as high as possible, so that the raw materials are fully matured as much as possible); the second time 50-60 Â° C (depending on the hardness of the finished product);
Steam pressure of sub-cylinder: 4kg/cm2 (not less than 3.5 kg/cm2)
Cooling temperature: room temperature (not higher than room temperature 4 Â° C)
Moisture after preparation (not subjected to steam granulation): 15-18%; moisture content after granulation: â‰¤ 12.5%.
Appendix II Basic material ratio
Apply to: Sandvik H6800, H3800,H4800,H7800,H2800,H8800,
Main material: high manganese steel, chrome-manganese (Mn13, Mn13Cr2, Mn18, Mn18Cr2), Carbide
Casting Process: water glass sand casting and lost foam casting process
Adapt materials: river gravel, granite, basalt, iron ore, limestone, quartz, diabase, iron ore, gold, copper, etc.
Applications: quarry gravel, concrete mixing station, dry mortar, desulfurization plant, quartz sand
Svedala Mantle And Bowl Liner,Svedala Mantle,Svedala Bowl Liner,Svedala Bowl Liner Parts
Ma An Shan Shi Bo Da Jing Shen Machinery Co.,ltd , https://www.bodamachinery.com