Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A technology of iron tailings and a new process, which is applied to the comprehensive utilization of resources and iron tailings re-election process, which can solve the problems of low recovery index and complicated process flow, and achieve the improvement of concentrate grade, simple process and low production cost Effect
Active Publication Date: 2018-07-27
KUNMING UNIV OF SCI & TECH
View PDF4 Cites 0 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
[0011] In order to solve some problems existing in the existing iron tailings re-election process, such as low recovery index and complicated process flow, the present invention provides a new process that can effectively realize iron tailings re-election
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0029] The raw ore (original iron tailings) is taken from the iron ore tailings pool of Shangchang Iron and Steel Group of Kunming Iron and Steel Group, containing 18.79% Fe, which belongs to low-grade, fine-grained and refractory red limonite tailings.
[0030] use as figure 1 In the process flow shown, firstly, the raw ore (iron tailings as it is) is finely ground, and the fineness of the ground product is -25 μm, accounting for 95%.
[0031] The ore grinding product (finely ground pulp) enters the mixing tank, and the agent YL-1 is added in an amount of 1500g / (t raw ore), and interacts in the mixing tank for 10 minutes.
[0032] The ore pulp after the chemical action is fed into the high-gradient strong magnetic separator, and the magnetic separation is carried out under the condition of high stroke frequency. The magnetic separation adopts two open-circuit processes, and the first and second magnetic separation iron concentrates are combined as the final iron concentrate. ...
Embodiment 2
[0035] The raw ore (iron tailings as it is) is taken from the root iron ore tailings pool of Kunming Iron and Steel Co., Ltd., containing 23% Fe, which belongs to low-grade, fine-grained and refractory hematite tailings.
[0036] use as figure 1 In the process flow shown, the raw ore (iron tailings as it is) is further finely ground, and the fineness of the ground product is -25 μm, accounting for 90%.
[0037] The ore grinding product (finely ground pulp) enters the mixing tank, and the drug YL-1 is added at a dosage of 1000g / (t raw ore), and interacts in the mixing tank for 8 minutes.
[0038] The ore pulp after the chemical action is fed into the high-gradient strong magnetic separator, and the magnetic separation is carried out under the condition of high stroke frequency. The magnetic separation adopts two open-circuit processes, and the first and second magnetic separation iron concentrates are combined as the final iron concentrate. mine.
[0039]In stage I high gradi...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
PUM
Login to view more
Abstract
The invention relates to a technological method for iron tailing reconcentration, in particular to a novel technology for iron tailing reconcentration and belongs to the field of mineral concentration and resource comprehensive utilization. The novel technology for iron tailing reconcentration is particularly suitable for fine-sized low-grade iron tailings. The novel technology for the iron tailing reconcentration comprises the steps that (1) fine grinding is conducted, wherein the iron tailings are further grinded, the fineness of the grounded tailing products are controlled to be that the products with the fineness being -25 microns accounting for over 80%; (2) an agent acts, wherein the agent YL-1 is added to the fine grinded pulp, the agent and the pulp mutually act for over 5 min under the stirring condition, the dosage of the agent YL-1 is not lower than 800 g / (t raw ores), and the agent YL-1 comprises, by weight, 80%-90% of sodium silicate, 8%-18% of ammonium sulfate and 0.5%-2% of nonionic polyacrylamide; (3) high-jig-frequency high-gradient magnetic separation is conducted, wherein the pulp obtained after the agent acts is fed into a high-gradient strong magnetic separation machine, magnetic separation is conducted under the condition of the high jig frequency, and during high-gradient magnetic separation, the jig frequency is not lower than 250 times / min. By the adoption of the novel technology for the iron tailing reconcentration, reconcentration of the iron tailings can be effectively achieved, namely efficient recycling of iron in the tailings is achieved, the process is simple, the production cost is low, and operation and implementation are easy.
Description
technical field [0001] The invention relates to a process for re-selecting iron tailings, which belongs to the field of mineral processing and resource comprehensive utilization, and is specifically a new process of "fine grinding-pharmaceutical action-high stroke frequency, high gradient and strong magnetic separation", especially suitable for fine Grain size, low grade iron tailings. Background technique [0002] my country's iron ore resources are seriously in short supply, and the degree of dependence on foreign countries continues to increase, reaching as high as 70% in 2011. On the other hand, iron tailings resources are very rich. According to statistics, the amount of iron mine tailings in my country reaches 2.614 billion tons, and it grows at a rate of 130 million tons every year. In many cases, iron tailings are still mines, even rich ore, which have been called "artificial deposits". Therefore, in the case of increasingly scarce iron ore resources and increasing...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more 
Login to view more