40 CFR Table 1
HAP Emissions Sources
June 9, 2020
Open Table
| Process | Emissions sources |
|---|---|
| 1. Sodium chromate production | a. Ball mill used to grind chromite ore. |
| b. Dryer used to dry chromite ore. | |
| c. Rotary kiln used to roast chromite ore to produce sodium chromate. | |
| d. Secondary rotary kiln used to recycle and refine residues containing chromium compounds. | |
| e. Residue dryer system. | |
| f. Quench tanks. | |
| 2. Sodium dichromate production | a. Stack on the electrolytic cell system used to produce sodium dichromate. |
| b. Sodium dichromate crystallization unit. | |
| c. Sodium dichromate drying unit. | |
| 3. Chromic acid production | a. Electrolytic cell system used to produce chromic acid. |
| b. Melter used to produce chromic acid. | |
| c. Chromic acid crystallization unit. | |
| d. Chromic acid dryer. | |
| 4. Chromic oxide production | a. Primary rotary roasting kiln used to produce chromic oxide. |
| b. Chromic oxide filter. | |
| c. Chromic oxide dryer. | |
| d. Chromic oxide grinding unit. | |
| e. Chromic oxide storage vessel. | |
| f. Secondary rotary roasting kiln. | |
| g. Quench tanks. | |
| 5. Chromium hydrate production | a. Furnace used to produce chromium hydrate. |
| b. Chromium hydrate grinding unit. |
As required in §63.11411(a), you must comply with the requirements of the General Provisions (40 CFR part 63, subpart A) as shown in the following table.
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