Method for synchronously separating potassium, lead and iron in sintering machine head ash

A technology of synchronous separation and head ash, applied in the chemical industry, can solve the problems of irritating odor of sodium sulfide, long flotation process, complex process, etc., to reduce leaching and filtration processes, increase product value, and good separation effect Effect

Active Publication Date: 2021-07-09
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The process is complicated, the process is long, and the treatment of lead-containing tailings is still in the research stage
[0006] There is also an existing technology that grinds the head ash ball to strengthen wetting and promote dispersion, thereby increasing the leaching rat

Method used

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  • Method for synchronously separating potassium, lead and iron in sintering machine head ash

Examples

Experimental program
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Example Embodiment

[0046] Example 1

[0047] The following method steps are simultaneously separated from the sintering machine head ash: the potassium, lead, iron:

[0048] a. Modulated mine: mixed with the sintering machine head ash (kg) in Table 1 and water (L) in solid-liquid ratio 1: 6, and modulate it into a slurry;

[0049] b. Slurry reselection: use pump to convey it to the FX150 type cyclone to carry out single-stage swirl grading, the amount of feed in the slurry is 0.16 MPa, the swing of the sandrose is 22mm, resulting in lead-containing material Pellets and ferrous slurry;

[0050] c. Isolate Iron, Lead: Filter the lead pads contained in step B and the iron-containing mine slurry, respectively, resulting in lead-containing materials, iron containing iron, and filtrate;

[0051] d. Separate potassium: mixed the filtrate obtained after filtration of step c, returning to step A. The water is used for the gel, and the pulp-reselection-filtration step is circulated, and the potassium ion conc...

Example Embodiment

[0053] Example 2

[0054] The following method steps are simultaneously separated from the sintering machine head ash: the potassium, lead, iron:

[0055] a. Modulated mine slurry: Mix the sintering machine head ash (kg) in Table 1 and water (L) in solid-liquid ratio of 1: 8, and modulate it;

[0056] b. Slurry reselection: Transfer it to the FX100 type cyclone in the FX100-type cyclone, the feedstock pressure of the slurry is 0.11MPa, the swing of the swing of the swing is 14mm, resulting in reselection of the slurry The layering obtains the primary reselection of the light phase slurry and the primary reselection of the recombination slurry; the primary reselection of the recombination slurry and water is adjusted to 1: 15 to a slurry, and it is delivered to the pump. The secondary swirl grading is performed in the FX175 cyclone, and the amount of feed in the slurry is 0.15 ~ 0.18 MPa, the swing of the sandrose is 32mm, and the ineraltic slurry is retrieved again, and the layere...

Example Embodiment

[0060] Example 3

[0061] The following method steps are simultaneously separated from the sintering machine head ash: the potassium, lead, iron:

[0062] a. Modulated mine: Mix the sintering machine (kg) in Table 1 and water (L) in solid-liquid ratio 1: 3, and modulate it into a slurry;

[0063] b. Slurry reselection: use pump to convey it to the FX175 cyclone to carry out single-stage swirl grading, the feed of the slurry is 0.2 MPa, the flow of the swivel sanders is 18mm, resulting in the primary weight Pearly select the phase slurry and the primary reselection of the recombinant phase slurry; the primary reselection of the recombination slurry is again swayed again under the same conditions, resulting in a secondary reselection of the light phase slurry and the secondary reselection weight phase. Slurry;

[0064] c. Isolate Iron, Lead: Selecting the primary phase slurry from the first stage of step B and the secondary reselection of the light phase slurry to contain lead mater...

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Abstract

The invention belongs to the technical field of chemical engineering, and particularly relates to a method for synchronously separating potassium, lead and iron in sintering machine head ash. In order to solve the problem that a method for effectively and synchronously separating potassium, lead and iron in the sintering machine head ash does not exist at present, the invention provides the method for synchronously and efficiently separating potassium, lead and iron in the sintering machine head ash, which mainly comprises the following steps: a, blending the sintering machine head ash into ore pulp; B, performing gravity separation on the ore pulp; C, filtering and separating iron-containing ore pulp and lead-containing ore pulp; and d, circulating the filtrate for multiple times to obtain a potassium-containing solution. The method has the characteristics of simple process, short flow, greenness, high efficiency and good separation effect. In the gravity separation process, the leaching rate of potassium exceeds 95%, the PbO content of a lead-containing material exceeds 35%, the TFe content of an iron-containing material exceeds 49%, the recovery rate of lead obtained through the method exceeds 95%, the recovery rate of iron exceeds 85%, the product value is greatly improved, and efficient resource utilization of the sintering machine head ash is achieved.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a method for synchronously separating potassium, lead and iron in sintering head ash. Background technique [0002] Sintering machine head ash is one of the fumes produced during the sintering process. It enters the dust removal system along with the sintering flue gas, and is then collected by the electrostatic precipitator. Because most of the ore used in sintering production contains potassium, sodium, lead, chlorine and other elements, it is very easy to volatilize in the high temperature process of sintering to form flue gas such as chloride, and then cool to very fine dust, which is collected by the electrostatic precipitator, thus obtaining sintered Machine head ash, which mainly contains potassium chloride, iron oxide, lead hydroxychloride, lead oxide, sodium chloride and common gangue minerals, and also contains a small amount of rare metals such as...

Claims

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Application Information

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IPC IPC(8): C22B7/02C22B26/10C22B13/00
CPCC22B7/02C22B7/006C22B26/10C22B13/045Y02P10/20
Inventor 曾冠武郝建璋杨珍张溅波任艳丽
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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