CN203700451U

CN203700451U - Recovering system for high iron sulfuric acid magnetized slag

Info

Publication number: CN203700451U
Application number: CN201420048537.0U
Authority: CN
Inventors: 王立新; 赵军; 魏晋; 栾东武; 李俊皓
Original assignee: Zhao Jinjinhe Science And Technology Ltd Of Zhaoyuan City
Current assignee: Zhao Jinjinhe Science And Technology Ltd Of Zhaoyuan City
Priority date: 2014-01-26
Filing date: 2014-01-26
Publication date: 2014-07-09
Anticipated expiration: 2024-01-26

Abstract

The utility model belongs to the technical field of slag recovering, and particularly relates to a recovering system for high iron sulfuric acid magnetized slag. The recovering system comprises a sulfur ore concentrate acid making system, a cooling system and a slag conveying system; the high sulfur ore concentrate passes a roasting furnace to obtain magnetized slag; the magnetized slag is treated with a heat recovery boiler, a cyclone dust collector, an electric dust collector, a slag heat exchanger, pneumatic conveying, and the like; the high temperature slag is cooled off and recovered. According to the utility model, the magnetized slag adopts the manner of pneumatic conveying, not only environment pollution caused by a conventional cooling humidifying technology is eliminated completely, but also a great amount of water resource and water treatment investment are reduced; the obtained magnetized slag is dispensed with drying treatment; oxidation of magnetized slag and consumption of follow-up drying energy source are avoided effectively.

Description

A kind of recovery system of high ferro sulfuric acid magnetization slag

Technical field

The utility model belongs to slag recovery technology field, relates in particular to a kind of recovery system of high ferro sulfuric acid magnetization slag.

Background technology

Traditional high-sulfur concentrate calciner is all to adopt dry type process for layout, the slag that stoving oven, waste heat boiler, tornado dust collector, dust precipitator produce cools the temperature to 400 ℃ of left and right by embedded scraper transporter, delivering to immersed-type cooling cylinder by star-like feeder again lowers the temperature, temperature is down to 100 ℃ of left and right and is transported to humidifier again and carries out humidification, the slag that humidification is crossed is by the feed bin of high angle belt conveyer product conveyor workshop, and its process flow sheet as shown in Figure 1.Its shortcoming is to utilize the indirect cooling slag of water resources, and not only cooling performance is poor, and equipment corrosion is serious, and maintenance is frequent, and waste resource, and cooling drum poor sealing, cause dust from flying, serious harm surrounding environment.

Utility model content

The deficiency that the utility model exists for above-mentioned prior art, provides the high ferro sulfuric acid of a kind of energy-conserving and environment-protective, raising operational efficiency to magnetize the recovery system of slag.

The technical scheme that the utility model solves the problems of the technologies described above is as follows: a kind of recovery system of high ferro sulfuric acid magnetization slag, comprise sulphur concentrate acid making system, cooling system and slag delivery system, described sulphur concentrate acid making system is made up of stoving oven, waste heat boiler, cyclone and dust precipitator, and its special character is:

Described cooling system is by calcining interchanger I, calcining interchanger II, high temperature sludge intermediate bin, low temperature slag intermediate bin and blower fan composition, the slag inlet of wherein said calcining interchanger I is connected by pipeline with the feed opening of stoving oven, the described slag inlet of calcining interchanger II and the first feed opening of waste heat boiler are connected by pipeline, described blower fan by pipeline respectively with calcining interchanger I, calcining interchanger II, the blast inlet of stoving oven connects, calcining interchanger I, the discharge gate of calcining interchanger II is connected with described high temperature sludge intermediate bin by pipeline respectively, the air outlet of described high temperature sludge intermediate bin is connected with the blast inlet of stoving oven by pipeline, described low temperature slag intermediate bin by pipeline respectively with the overflow spiral residue extraction machine II of waste heat boiler, the overflow spiral residue extraction machine I of cyclone and the overflow spiral residue extraction machine III of dust precipitator are connected,

Described slag delivery system is made up of air conveying I, air conveying II, air compressor plant and scum storage warehouse, one end of wherein said air conveying I is connected with high temperature sludge intermediate bin by pipeline, the other end is connected with scum storage warehouse by pipeline, one end of described air conveying II is connected with low temperature slag intermediate bin by pipeline, and the other end is connected with scum storage warehouse by pipeline; Described air compressor plant is connected with air conveying I, air conveying II respectively by pipeline.

Feature of the present utility model and beneficial effect are:

1, in magnetization slag process of cooling of the present utility model, in encloses container, carry out, adopt high-speed compressed air to contact with high temperature magnetization slag with mushroom form, reach instantaneous temperature reduction cooling performance, do not adopt water-cooled or the high temperature resistant handling equipment of long distance, corrosion and environmental pollution are reduced, in heated air, oxygen reacts with remaining sulphur in magnetization slag again, that produces returns to sulfurous gas in stoving oven and stove containing the hot flue gas of sulfurous gas and mixes increase reaction density, this process has consumed oxygen in air simultaneously, for oxygen roasting a little less than stoving oven provides suitable atmospheric condition,

2, magnetization slag of the present utility model adopts pneumatic conveying mode, not only thoroughly eliminate the contaminate environment that traditional cooling humidifying process causes, and save great lot of water resources and water treatment investment, the magnetization slag obtaining, again without making drying and processing, effectively prevents from magnetizing the consumption of slag oxidation and the follow-up dry energy.

Accompanying drawing explanation

Fig. 1 is traditional recovery process schema of high ferro sulfuric acid magnetization slag;

Fig. 2 is structure connection diagram of the present utility model;

In figure, 1, stoving oven; 2, waste heat boiler; 3, cyclone; 4, overflow spiral residue extraction machine I; 5, high temperature cut-off valve I; 6, high temperature cut-off valve II; 7, overflow spiral residue extraction machine II; 8, dust precipitator; 9, calcining interchanger I; 10, calcining interchanger II; 11, high temperature sludge intermediate bin; 12, low temperature slag intermediate bin; 13, overflow spiral residue extraction machine III; 14, air conveying I; 15, air conveying II; 16, scum storage warehouse; 17, blower fan; 18, air compressor plant.

Embodiment

Below in conjunction with accompanying drawing, principle of the present utility model and feature are described, example, only for explaining the utility model, is not intended to limit scope of the present utility model.

A kind of recovery system of high ferro sulfuric acid magnetization slag, comprise sulphur concentrate acid making system, cooling system and slag delivery system, described sulphur concentrate acid making system is made up of stoving oven 1, waste heat boiler 2, cyclone 3 and dust precipitator 8, between described stoving oven 1, waste heat boiler 2, cyclone 3 and dust precipitator 8, connects successively by pipeline;

Described cooling system is by calcining interchanger I 9, calcining interchanger II 10, high temperature sludge intermediate bin 11, low temperature slag intermediate bin 12 and blower fan 17 form, the slag inlet of wherein said calcining interchanger I 9 is connected by pipeline with the feed opening of stoving oven 1, the described slag inlet of calcining interchanger II 10 and the first feed opening of waste heat boiler 2 are connected by pipeline, described blower fan 17 by pipeline respectively with calcining interchanger I 9, calcining interchanger II 10, the blast inlet of stoving oven 1 connects, calcining interchanger I 9, the discharge gate of calcining interchanger II 10 is connected with described high temperature sludge intermediate bin 11 by pipeline respectively, the air outlet of described high temperature sludge intermediate bin 11 is connected with the blast inlet of stoving oven 1 by pipeline, described low temperature slag intermediate bin 12 by pipeline respectively with the overflow spiral residue extraction machine II 7 of waste heat boiler 2, the overflow spiral residue extraction machine I 4 of cyclone 3 and the overflow spiral residue extraction machine III 13 of dust precipitator 8 are connected,

Described slag delivery system is made up of air conveying I 14, air conveying II 15, air compressor plant 18 and scum storage warehouse 16, one end of wherein said air conveying I 14 is connected with high temperature sludge intermediate bin 11 by pipeline, the other end is connected with scum storage warehouse 16 by pipeline, one end of described air conveying II 15 is connected with low temperature slag intermediate bin 12 by pipeline, and the other end is connected with scum storage warehouse 16 by pipeline; Described air compressor plant 18 is connected with air conveying I 14, air conveying II 15 respectively by pipeline.

The utility model is to use like this:

(1) high-sulfur concentrate is after stoving oven 1, the temperature that overflow slag in stoving oven 1 and waste heat boiler 2 first hoppers are collected is passed through respectively high temperature cut-off valve I 5 the slag of 850～950 ℃, high temperature cut-off valve II 6 enters calcining interchanger I 9, calcining interchanger II 10, thermal baking slag is cooling by wind-force in calcining interchanger, after being cooled to 300～400 ℃, together with discharge gate, deliver to high temperature sludge intermediate bin 11 by wind-force with warm air, in the interior gas solid separation of high temperature sludge intermediate bin 11, warm air returns to stoving oven 1 reuse as secondary air, the wind-force that is 0.5MPa by slag delivery system by pressure after warm sludge is cooling carries I 14 to be transported to scum storage warehouse 16,

(2) temperature that in sulphur concentrate acid making system, waste heat boiler 2 second, third hoppers, tornado dust collector 3 and dust precipitator 8 trap is the slag of 280～320 ℃, deliver to together low temperature slag intermediate bin 12 by wind-force from discharge gate, after low temperature slag intermediate bin 12 mixes, the wind-force that is 0.3MPa by pressure by slag delivery system carries II 15 to be transported to scum storage warehouse 16.

The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.

Claims

1. a recovery system for high ferro sulfuric acid magnetization slag, comprises sulphur concentrate acid making system, cooling system and slag delivery system, and described sulphur concentrate acid making system is made up of stoving oven, waste heat boiler, cyclone and dust precipitator, it is characterized in that: