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Oxygen adding system and method for reactor iron removing

A reactor and oxygen technology, used in the field of hydrometallurgy, can solve the problems of uneven oxygen addition and blockage of the oxygen nozzle, and achieve the effects of high temperature, large steam volume, and continuous and stable production.

Active Publication Date: 2015-04-08
CINF ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the problem of blockage of the oxygen nozzle and uneven oxygen addition in the prior art, the present invention aims to provide an oxygen addition system and method for reactor iron removal, which can effectively solve the above technical problems

Method used

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  • Oxygen adding system and method for reactor iron removing

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Embodiment 1

[0031] A kind of oxygen adding system that is used for reactor iron removal, comprises the reactor 6 that is provided with at least one stirring device 7, the liquid before iron removal that is connected at one end of reactor 6 adds pipe 1 and is connected at the other end of reactor 6 The liquid outflow pipe 5 after iron removal; also includes oxygen feed pipe 2, steam feed pipe 8 and a plurality of mixed gas feed pipes 11; the multiple mixed gas feed pipes 11 are evenly arranged on the top of the reactor 6, the mixing The upper end of the gas addition pipe 11 is located outside the reactor 6, and the lower end of the mixed gas addition pipe 11 is located inside the reactor 6, and is positioned above the liquid level; the oxygen addition pipe 2 is provided with a plurality of oxygen branch pipes 9, and the steam The feeding pipe 8 is provided with a plurality of steam branch pipes 10, and any oxygen branch pipe 9 communicates with a steam branch pipe 10 two by two, and then co...

Embodiment 2

[0034] A kind of oxygen addition method that is used for reactor deironing, uses the oxygen addition system described in embodiment 1, concrete steps are:

[0035] 1) Open the discharge valve F1 first, then open the feed valve F2, and pump the pre-deferrification liquid into the reactor 6 through the pre-deferrification liquid addition pipe 1;

[0036] 2) Open the oxygen regulating valve F4, open the steam regulating valve F5, introduce oxygen with a concentration of more than 98% and high-pressure steam at the same time, and enter the reactor 6 after the steam and oxygen are fully mixed, and control the temperature in the reactor to 190°C-210°C ℃, the total pressure is 1800KPa, and the oxygen partial pressure is 200KPa~300KPa;

[0037] 3) After the pre-iron removal liquid enters the reactor 6, under the conditions of step 2, iron precipitates into the slag as hematite, and the iron-removal liquid flows out through the iron-removal liquid outflow pipe 5. After the liquid afte...

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Abstract

The invention belongs to the technical field of wet metallurgy, and in particular relates to an oxygen adding system and method for reactor iron removing. The system comprises a reactor provided with at least one stirring device (7), and further comprises an oxygen adding pipe (2), a steam adding pipe (8) and a plurality of mixed gas adding pipes (11), the oxygen adding pipe (2) is provided with a plurality of oxygen branched pipes (9), the steam adding pipe (8) is provided with a plurality of steam branched pipes (10), wherein any one of the oxygen branched pipes (9) is communicated with any one of the mixed gas adding pipe (11) after being communicated with one steam branched pipe (10). The oxygen is fixedly mixed with the high-pressure steam, and then added in the reactor from many points, the uniform adding of the oxygen can be realized to benefit the operation of the iron-removing reaction, and meanwhile, the problem of the oxygen adding pipe blocking in the prior art is solved.

Description

technical field [0001] The invention belongs to the technical field of hydrometallurgy, and in particular relates to an oxygen addition system and method for removing iron in a reactor. Background technique [0002] Iron removal is an important issue in hydro-method zinc smelting. Roasting, leaching, purification, electrowinning and casting are basically the same in hydro-method zinc smelting. The only difference is that various hydro-method zinc smelting processes are produced by adopting different iron removal methods. The iron removal process of wet zinc smelting can be classified into two categories: one is the pyroprocessing leaching slag process represented by the conventional method, which is characterized by only producing one kind of waste slag (containing iron) In the past, the waste slag is easy to store and sell, but there are low zinc leaching rate, high energy consumption, and low concentration of SO 2 Flue gas needs to be treated and other issues, another typ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B19/20C22B3/44
CPCY02P10/20
Inventor 何醒民舒见义张成松左小红陈阜东
Owner CINF ENG CO LTD
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