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High-purity basic zinc carbonate
1. General data and product nature
★Molecular formula ZnC03 • 2Zn(OH)2 • H2O ★Molecular weight: 342.23
★ Appearance and characteristics: white amorphous powder
Executive Standard: Industry Standard HG/T2523-07
2. Chemical properties
Basic zinc carbonate is synthesized from zinc sulfate and soda ash. Its chemical properties determine that it has accelerated vulcanization, hydrogen sulfide removal and sterilization functions in different fields of use. The product color is white, with excellent fluidity and stable physicochemical properties; the company's zinc sulphate production workshop process: coarse leaching - primary oxidation - replacement - secondary oxidation - replacement, selection of high quality original Auxiliary materials, multi-stage impurity removal technology, first-class equipment, and top-level technology ensure the purity of zinc sulfate solution. Using the national standard superior soda ash, after dissolution, heating, pressure filtration, to ensure that the soda ash is clean and free of impurities. Starting from the synthesis of zinc carbonate, the reaction conditions are controlled by various means to ensure that the basic zinc carbonate particles are produced under controlled conditions; the synthesized product is subjected to soft water rinsing, diaphragm filter press solid-liquid separation, air flow drying, particle size classification, and further Through the vibrating screen, packaging, the equipment used is fully automatic control, the equipment material is made of 304 stainless steel. The high performance and stability of the product are guaranteed from the process and equipment; the heat source of the company is natural gas, and the air for drying the hot air furnace is treated by the filter to avoid black spots in the product, and the product has good fluidity and high The specific surface area; soft water rinsing, the product soluble salt is extremely low, reaching the GMP standard; all the vibrating screen of the product is the guarantee of fineness, and the pure zinc sulphate manufacturing process makes the total amount of lead, arsenic and cadmium heavy metals in our products reach 10PPM; Excellent equipment, advanced technology, ISO management have created the excellent quality of gem brand zinc carbonate.
3. Application:
High-purity basic zinc carbonate is used as a skin protectant in medicine; it is used as a zinc supplement in feed and also as a high-purity zinc stearate.
It is used in the industry as a light astringent and latex product, as a calamine lotion, and as a desulfurizer and pore former in the catalyst industry. In rubber products, since the refractive index of zinc carbonate is close to that of rubber, it is used as a transparent rubber product and as an EVA foaming accelerator.
4, packaging: 25kg, double-layer packaging, outer layer coated woven bag, the inner layer is waterproof and moisture-proof plastic bag.
High purity zinc carbonate basic analysis report
|
Analysis article |
Specification |
calamine |
feed |
catalyst |
Transparent rubber |
Eva foaming |
|
Zinc carbonate（as Zn） |
57.7% min |
57.5-58% |
57.5-58% |
57.5-58% |
57.5-58% |
57.5-58% |
|
Lead oxide(as Pb) |
≤0. 03% max |
0.0005% |
0.0007% |
0.0025% |
0.0015% |
0.0015% |
|
Arsenic (as As) |
≤0.0005% max |
0.0001% |
0.0003% |
0.0001% |
0.0005% |
0.0005% |
|
Cadmium (as Cd) |
≤0.02% max |
0.0003% |
0.0005% |
0.0009% |
0.0008% |
0.0008% |
|
Manganese (as Mn) |
≤0.005% max |
0.0025% |
0.0045% |
0.0007% |
0.0007% |
0.0007% |
|
Loss on ignition |
25.0-28.0 |
25.0-28.0 |
25.0-28.0 |
25.0-28.0 |
25.0-28.0 |
25.0-28.0 |
|
Moisture |
≤2.5% max |
2.2% |
2.5% |
2.5% |
2.5% |
2.0% |
|
Residue on pass75um sieve |
99% min |
99.5 |
99.2 |
99.6 |
99.7 |
99.8 |
|
Sulfate SO4(2-) |
0.8% |
0.45% |
0.6% |
0.5% |
0.6% |
0.7% |
|
Specific Surface Area |
m2/g |
50 |
45 |
65 |
55 |
50 |
|
Bulk density |
0.5~1.1 |
0.5-0.6 |
0.7-1.0 |
0.28-0.32 |
0.6-0.7 |
0.4-0.6 |
|
PH |
6-9 |
7.5-8.2 |
7.1-8 |
7.5-8.5 |
8.0-8.5 |
7-8.1 |
Note ： The data listed in the table are regular values. They can be adjusted according to the customers' request.