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A new process and production system for composite lean iron ore pre-selection

A technology of iron ore and new process, which is applied in the field of medium and low-grade magnetite ore, composite lean iron ore pre-selection new process and its production system. Advanced problems, to achieve the effect of improving grade, reducing ore quantity, power consumption and material consumption

Active Publication Date: 2017-03-08
ANHUI MASTEEL ENG & TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] Aiming at the problems of high energy consumption, large amount of tailings and insufficient thorough separation of gangue in the ore in the pre-selection process of composite lean iron ore in the prior art, the present invention provides a new pre-selection process of composite lean iron ore and its production system

Method used

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  • A new process and production system for composite lean iron ore pre-selection
  • A new process and production system for composite lean iron ore pre-selection
  • A new process and production system for composite lean iron ore pre-selection

Examples

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Embodiment 1

[0045] For further describing the present invention, below in conjunction with accompanying drawing and example the present invention will be further described:

[0046] The ore samples in this example are taken from the mixed iron ore of Huoqiu Zhouji Iron Mine in Anhui Province. The analysis results of multi-element and iron phase of the original ore are shown in Table 1 and Table 2 below.

[0047] Sample multi-element analysis results Table 1

[0048] element TF S Fe FeO S P content(%) 29.09 17.29 8.12 0.069 0.034 element CaO MgO SiO 2

al 2 o 3

caustic soda content(%) 1.86 1.39 46.20 3.23 2.07

[0049] Sample iron phase analysis results Table 2

[0050] mineral name content(%) Proportion(%) magnetite 14.09 48.44 False Hematite 3.20 11.00 Hematite 4.10 14.09 iron carbonate 0.48 1.65 Iron silicate 7.12 24.48 pyrite 0.10 0.34

[0051] total...

Embodiment 2

[0070] In step B of Example 1, since the ore-discharging product of the high-pressure roller mill is a cake-shaped material, it directly enters the linear vibrating screen I for wet screening. Since the vibrating screen does not have the function of breaking up the material, the cake-shaped material is difficult to sieve points, resulting in low production efficiency of the entire production process.

[0071] A new process for the pre-selection of composite lean iron ore in this embodiment, the process steps are the same as in embodiment 1, the difference is that in order to improve the production efficiency of the whole process, the cake-like materials are first dispersed by a wet high-efficiency disperser.

[0072] The wet high-efficiency dispersing machine used in a new process for the pre-selection of composite lean iron ore in this embodiment, such as figure 2 As shown, it includes a cylinder 7, a power device and a transmission device. The power device is fixed on the g...

Embodiment 3

[0078] A kind of composite poor iron ore pre-selection novel process of the present embodiment, process step is the same as embodiment 2, and difference is: as image 3 As shown, the wet high-efficiency dispersing machine used also includes a supporting wheel device 12 and a blocking wheel device 10; the supporting wheel device 12 is fixed on the ground and is a rotating shaft type rolling bearing supporting wheel set, including 4 supporting wheels and 2 The runners 13 are divided into two groups of front and rear symmetry, and each group has the runners 13 in the middle, and the support rollers are symmetrically arranged on both sides of the runners 13, and the runners 13 and the rolling rings 16 arranged on the left and right outer walls of the cylinder 7 The rotating connection is used to bear the weight of the entire rotating body and the material. The supporting wheel 13 and the running wheel 13 are used in symmetry, the structure is simple, the maintenance is convenient, ...

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Abstract

The invention discloses a novel composite lean iron ore pre-concentration technology and a production system thereof, and belongs to the technical field of ore concentration. The novel composite lean iron ore pre-concentration technology includes the steps that composite lean iron ore is crushed; the crushed products are smashed to be phi 3 mm through a high-pressure roller milling screen fully-closed superfine crushing technology; a wet low-intensity magnetic separation and wet high-intensity magnetic separation combined technology is carried out; concentrate of a low-intensity magnetic separation machine and concentration of a high-intensity magnetic separation machine are mixed and then later ball milling grading starts; tailings of the high-intensity magnetic separation machine enters a linear vibration screen II for dehydration. The production system of the novel composite lean iron ore pre-concentration technology comprises a high-pressure roller grinding machine, a wet efficient beating machine, a linear vibration screen I, the low-intensity magnetic separation machine, the high-intensity magnetic separation machine and the linear vibration screen II which are sequentially distributed on a production assembly line according to the process sequence. By means of the technology and the system, a large amount of qualified tailings can be abandoned before the composite lean iron ore is ground, the grinding amount is lowered, and the aims that more tailing is crushed, little tailing is ground and the tailing is abandoned earlier are achieved.

Description

technical field [0001] The invention belongs to the technical field of ore dressing, and in particular relates to a new process for pre-selecting composite lean iron ore and a production system thereof, and is particularly suitable for low- and medium-grade (iron grade≤30%) magnetite ore. Background technique [0002] Energy saving and consumption reduction means saving energy, reducing consumption, and using the least investment to obtain the greatest economic benefits. Energy conservation and consumption reduction has become a basic national policy of our country. Guided by the scientific concept of development, our country is accelerating the development of modern energy industry, adhering to the basic national policy of saving resources and protecting the environment, and placing the construction of a resource-saving and environment-friendly society on the industrialization and modernization The prominent position of the development strategy, strive to enhance the abilit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03B9/00B03C1/30B07B1/28B02C17/00
Inventor 孙业长刘建华葛新建耿希华魏延涛束剑何丽萍
Owner ANHUI MASTEEL ENG & TECH GRP
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