Way of processing grass
The processing of straw can be divided into three types: field compact, fixed compact and dry compact.
(1) The field briquettes are completed by a walking hay pick-cut short-presser, picking up the hay directly in the field, cutting the hay and pressing it into a straw. The mass of the grass is usually 30 mm × 30 mm × (50 to 100) mm and the density is about 700 to 850 kg / m 3 . Field briquettes require a moisture content of between 10% and 12%.
(2) The machine used for fixing the compact is a fixed briquetting machine, and the hay is cut short in the processing plant and pressed into a grass block. The mass of the grass is usually 32 mm × 32 mm × (37 to 50) mm and the density is 600 to 1 000 kg / m 3 .
(3) The drying clamp is completed by a mobile drying briquetting machine. The fresh grass is transported by the transporter, and the fresh grass is cut into grass sections, which are 20 to 50 mm long and placed in a dryer for rapid drying, so that the moisture content of the forage is rapidly reduced from 75% to 80% to 12% to 15%. Squeeze into the briquetting machine to compress the grass. Drying compacts are costly and have less application. In the process of pressing the straw, additives such as urea, minerals and trace elements can be added as needed.
Zinc is a chemical element with the symbol Zn and atomic number 30. Zinc is a slightly brittle metal at room temperature and has a blue-silvery appearance when oxidation is removed.In some respects, zinc is chemically similar to magnesium: both elements exhibit only one normal oxidation state (+2), and the Zn2+ and Mg2+ ions are of similar size.The material of the triangle valve in the hardware is mainly copper, stainless steel, alumina and zinc alloy, and the surface of the metal fittings of copper and zinc alloy is often chrome plated. Considering the damp environment , the hardware is often treated with multilayer electroplating to resist corrosion and oxidation when leaving the factory.Complete copper hardware is the most expensive, zinc alloy hardware price moderate.Some of our valves are used for camping stoves, and it is hard to avoid rain and snow when using outdoors. Due to environmental factors, the valve needs alloy coating for moisture-proof and anti-corrosion, and zinc valve generally has metal coating.
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