TH36728A - Method for treating effluent from gas leaching systems of iron ore reduction plants - Google Patents

Abstract

DC60 (09/03/42) is described as a procedure for dealing with flushing water from the plant's gas flushing system. Reduces iron ore oxygen In which the washed water was made Direct contact with gas in two gas washers (1 to 4) located next to the gas side. It is two stages of washing that are integrated. Well, one is behind the other, taken from the gas cleaner. After solid material separation Has been returned Processed and cooled And returned to the gas washer, so the rinsed water was removed. Separate from two rinsing stages and only rinsing water. From the first rinsing stage, it is essentially emitted from solid substances in the concentrate (6) and then passed further into the hot water tank (8). The rinse water from the second rinse is passed directly into the tank. The water recovers (10), which results in a decompressed gas rich in carbon dioxide. This is then passed into a hot water tank so that the internal rinse water is enriched with carbon dioxide. The rinse water from the hot water tank is cooled in the heat exchanger (19) and then returned with the rinse water from the hot water tank. The hot water tank returns (10) to the gas purifier of the two stage rinse, in which the water is rinsed in the hot water tank enriched with another carbon dioxide. Part of the gas is flushed with carbon dioxide. Or part of the carbon dioxide-rich water in the return water tank can be passed into the hot water tank (Figure). It is described as a practice with the rinse water from the gas flushing system of the iron ore deoxidation plant. In which the washed water was made Direct contact with gas in two gas washers (1 to 4) located next to the gas side, two stages of washing are integrated. One kind Behind the other was taken from the gas cleaner. After solid material separation Has been returned Processed and cooled And back to the gas cleaner Therefore, the rinsing water is designed separately from two rinsing stages and only rinsing water. From the first rinsing stage, it is essentially emitted from solid substances in the concentrate (6) and then passed further into the hot water tank (8). The rinse water from the second rinse is passed directly into the tank. The water recovers (10), which results in a de-pressure relief gas rich in carbon dioxide. This is then passed into the hot water tank so that the internal rinse water is enriched with carbon dioxide. The rinse water from the hot water tank is cooled in the heat exchanger (19) and then returned with the rinse water from the water tank. The hot water flows back (10) to the gas purifier of the two-stage rinse, in which the water is rinsed in the hot water tank enriched with another carbon dioxide part of the gas. Carbon dioxide Or part of the carbon-rich water in the return water tank Able to pass into the hot water tank

Claims (1)

1. How to treat the effluent from the gas leaching system of the iron ore reduction plant, the rinse water is in direct contact with the gas in the machine. Two gas flushing machines (1 to 4) In a two-stage rinse located in a design, one behind the other on the gas side, the rinse water is removed from the gas washer (1 to 4) and after the solids separation process. And the cold was returned to Another gas cleaner (1 to 4). It is characterized by the rinsing water. Designed separately from two rinsing stages And only the water washed from the step The first wash is made free from solids as an important aspect in the tag maker: