Molecular sieves has uniform inner pores, the pores’ diameter is the same with some molecules. Our products includes molecular sieves and synthetic zeolite powders with type 3A, 4A, 5A, 10X, 13X and etc. And each type can be detailed to many kinds. We will introduce them separately.
Because synthetic zeolite powder 3A and 5A was transformed from synthetic zeolite powder 4A by ion exchange, and synthetic zeolite powder 10X was transformed from synthetic zeolite powder 13X by ion exchange, and also the processes of making synthetic zeolite powder 4A and 13X are the same, so we will start from the manufacturing process of synthetic zeolite powder 4A.
The manufacturing process of synthetic zeolite powder 4A can be divided into material preparing, mixing, crystallization, filter, washing, drying and packing. The making method is called hydrothermal synthesis method.
And the manufacturing process of molecular sieves is as below, adding binders to the synthetice zolite powders, after beading or pelleting, calcination and packing, the products came to be OK.
The raw materials for manufacturing synthetic zeolite powders are the same including NaOH, Al(OH)3, water and water glass (Na2SiO3 solution), we have several tanks in the manufacturing department which each tank has one big letter on the body, A, H, S, H, they mean NaAlO2 solution, NaOH solution, (Na2SiO3 solution) and water seperately, and the binders for molecular sieves’ beading or pelleting are Kaolin Clay and Attapulgite Clay. The process is as the belowing graph.
The material of solid Al(OH)3 and NaOH we used in manufacturing are high quality, it can be used only when these solid materials are making into solution by adding some water. After mixing the Al(OH)3 solution and NaOH solution by certain rate, we got NaAlO2 solution, it is stored in the tank named A. We buy Na2SiO3 solution from another big company, it is also high quality and stored in the tank named S in the manufacturing department.
Then we mixing NaAlO2 solution, NaOH solution, Na2SiO3 solution and water by certain rate in the mixing tank, after we heat the tank for a certain time, we got the raw 4A crystal, and then we put the 4A crystal into the filter tank for filter and washing, and also for drying, after these processes, we got the synthetic zeolite powder 4A, and after packing in the packing department, we got the final 4A synthetic zeolite powder.
For the producing process for synthetic zeolite powder 5A and 3A, it is much the same with 4A synthetic zeolite powder, after we got the 4A crystal, we put the 4A crystal into the ion exchange tank, if we want get 5A, we put the CaCl2 solution in, if we want 3A, we will put the KCl solution in, at the same time, we heat the ion exchange tank. After filter, washing, drying and packing, we got the final 5A or 3A synthetic zeolite powder.
And the manufacturing process of 13X synthetic zeolite powder is the same with 4A synthetic zeolite powder, only the mixing rate is different. And after we got 13X crystal, we put the srystals into the ion exchange tank, and also put the CaCl2 solution in, after heating, filter, washing, drying and packing, we got the final synthetic zeolite powder 10X.
The manufacturing of molecular sieve is much easier, we add some binders to the synthetic zeolite powders with certain rate, usually we use Attapulgite clay and Kaolin clay as the binders. And also we will add some water. If we need bead products, we will put the well mixed synthetic zeolite and binders to the rolling machine, and the powders will be formed to bead, the diameter of the bead will be well controlled arrcording to the customers’ need, this is called products’ beading, after the beads are pre-dryed in the air, we will put the beads to the calcination oven, after calcination, we got the hot products, only after beads are cooling for a short time and packing, we got the final bead products; if we need pellet products, we will put the well mixed synthetic zeolite and binders to the pelleting machine, arrording to customers’ needs, we will choose the 1/8’’1 or /16’’ pellet, after pelleting, we put the pellets into the calcination oven, in the exit of the oven, we got the final pelleting products, after packing, it can be sold.
And we can see the products manufacturing graph as below, it will be much clearer: