The products of the factory are sodium dichromate, chromic anhydride, potassium dichromate, potassium chromate, chromium oxide green, glauber's salt, desulfurizer and so on. The product explanation is as follow:
Sodium dichromate is orange monoclinic crystal or needle crystal, the product first quality rate is keeping more than 95% in donkey's years, its steady quality, high purity, even grain are popular with the customers. The product quality standard executes GB/T1611-2003. The product is mainly used for tannage, mordant dyeing and pharmacy in light industry, and also can be used in other chromium series products manufacture, for example, chromic anhydride, potassium dichromate, chrome yellow, chromium oxide green and so on, furthermore, it can used in metal inhibition.
Chromic anhydride is chromium trioxide, purple flap; the product is high purity, less impurity, sterling color, even piece, the best quality product is keeping above 95% in many years, has continuously achieved three times national highest silver medals, has famous report in the market. The product executes GB/T1610-2003 quality standard, is mainly used in galvanization, metal passivation, wood antisepticise, accelerant, chrome yellow pigment, chromium oxide green, dye mordant, and oxidant areas.
Potassium dichromate is orange triclinic slaty crystal, the product best quality rate is keeping 100% for many years, steady quality, high purity, sterling color, fresh, even piece, the quality of the product is at the head of the same industry. The product executes HG2324-2003 quality standard, is mainly used for produce chromic oxide, chrome yellow pigment, metal passivation, electrode, match, oxidant, chromic potassium sulfate and other chemical reagent.
Desulfurizer is normal temperature ferric oxide desulphurizer. Shape （mm）：ф3.5×4～15 (brown yellow stick), measurement of pressure intensity (N/㎝)：>40, specific surface area (㎡/g)：>20, bulk density (g/㎝3)：0.75～0.85, raw gas H2S content (ppm)：<200, ignition loss (wt%)：<5, pressure (Mpa)：constant pressure, constant pressure: 300-700, pressurize: 500-1200, Penetrating sulfur capacity: (wt%)：>18, degree of purification (ppm)：≤0.1.
Products index is in the following annexed tables:
Table one: Industrial sodium dichromate quality index
Index |
National Standard GB/T1611-2003 |
Best quality |
First quality |
Qualified product |
Na２Cr２O7·２H2O%≤ |
99.3 |
98.3 |
98.0 |
SO4%≤ |
0.20 |
0.30 |
0.40 |
CL%≤ |
0.10 |
0.10 |
0.20 |
Table two: Industrial chromic anhydride product quality index
Index |
National Standard GB/T1610-2003 |
Best quality |
First quality |
Qualified product |
CrO3%≥ |
99.7 |
99.5 |
99.0 |
Insoluble in water %≤ |
0.02 |
0.05 |
0.10 |
SO4%≤ |
0.06 |
0.15 |
0.30 |
Na%≤ |
0.05 |
- |
- |
Table three: industrial potassium dichromate quality index
Index |
National Standard HG/T2324-2003 |
Best quality |
First quality |
Qualified product |
K2Cr2O7%≥ |
99.7 |
99.5 |
99.0 |
CL%≤ |
0.050 |
0.050 |
0.080 |
Insoluble in water%≤ |
0.020 |
0.020 |
0.050 |
SO4%≤ |
0.02 |
0.05 |
- |
Moisture %≤ |
0.030 |
0.050 |
|
Table four: desulfurizer index
Desulfurizer component(wt%) |
Component |
Fe2O3 |
AL2O3 |
MgO |
CaO |
Cr6+ |
∑Cr |
K |
Insoluble in acid |
Element |
45.21 |
18.95 |
12.99 |
2.87 |
0.087 |
0.91 |
3.76 |
6.35 |
|
