When it comes to putty powder, people who do renovation and engineering should be familiar. Putty powder is not a single lime or gypsum, it is composed of base materials, fillers and additives.
The binder, also known as the binder, is the most critical component of the putty and acts primarily for bonding. The commonly used binders for putty are cement and organic polymers, and organic polymers are divided into emulsions and latex powders. Cement is a binder that is good in adhesion, durable and cost-effective, but has poor tensile strength and crack resistance. Organic polymers can be modified and toughened to improve putty performance.
The additives mainly serve as filling, and commonly used are calcium carbonate, talc and quartz sand. Attention should be paid to the combination of filler fineness.
There are thickeners, water retention agents, and the like. Thickeners and water retaining agents play a role in water retention, storage and construction performance, and cellulose is generally used. Antifreeze mainly improves the storage stability of putty at low temperature. Slip agent and water reducer are generally used in high-grade putty to improve the construction performance of putty. Some also add fiber to prevent cracking.
The preparation of putty powder requires the use of a mill, mainly focusing on the grinding of fillers, such as calcium carbonate powder (light calcium powder, heavy calcium powder), quartz sand grinding. SBM Company recommends the use of high-pressure mill as a powder for grinding powder of putty powder. The high-pressure mill consists of main machine, classifier, blower, belt feeder, storage hopper, piping system, pulse dust collection system, transmission system, electricity. Control cabinet and other components.
Heavy calcium carbonate is called heavy calcium powder. It is processed into white powder with high quality limestone and calcite. Its main component is CaCO3. The heavy calcium powder has high whiteness, good purity, soft hue and stable chemical composition. Features. Heavy calcium powder is commonly used as a filler, widely used in artificial floor tiles, rubber, plastics, paper, paint, paint, ink, cable, construction supplies, food, medicine, textile, feed, toothpaste and other industries, as a filler to increase products The volume reduces production costs.
Light calcium powder is light calcium carbonate powder, also known as precipitated calcium carbonate, referred to as light calcium. It is made by burning limestone and other raw materials into lime and carbon dioxide, and then adding water to digest lime to form lime milk (main component calcium hydroxide), and carbon dioxide is introduced. The carbonized lime milk forms a calcium carbonate precipitate, which is obtained by dehydration, drying and pulverization. The light calcium powder has a small particle size and a small amount of calcium carbonate. The oil absorption is larger than that of the calcium carbonate, and the price is high. At the same time as a latex paint filler, light calcium is better in sedimentation, and the oil absorption is greater than heavy calcium, the price is generally more expensive than heavy calcium, but the stability is not as good as heavy calcium, so it is mainly used in interior wall paint!
The production process of heavy calcium powder and light calcium powder has been mentioned above. The heavy calcium powder is relatively simple, and the basic crushing equipment is broken and then enters the grinding machine for grinding. The modern grinding system is basically feeding, grinding, discharging, collecting powder and bagging in one go. Select the appropriate mill according to the required fineness of the powder. Basic selection of Raymond mill, high pressure mill, overpressure trapezoid mill, and European mill are available below 400 mesh. It is recommended to use scm ultrafine mill for powder above 400 mesh, SBM The main products are YGM4528 high-pressure mill, YGM4121 high-pressure mill, and one-piece suspension roller mill (European). Welcome to visit and investigate.
The production process of light calcium is more troublesome and requires more energy. Including preliminary crushing, calcination into the kiln, hydration into milk exothermic, carbonization and solidification, followed by the process of crushing and grinding. The grinding equipment required for light calcium powder production is the same as that of heavy calcium powder. Raymond mill, high pressure mill, superfine mill, European mill, even vertical mill and ball mill are all available.