A method for classifying and purifying weathered potassium feldspar ore

A technology of potassium feldspar and potassium feldspar powder, which is applied in the field of purification of weathered potassium feldspar minerals, which can solve the problem that feldspar and gangue minerals cannot be effectively separated, and high-quality feldspar powder and feldspar mineral utilization cannot be produced. Low efficiency and other problems, to achieve good flotation effect, expand the cut-off grade, and increase the added value

Active Publication Date: 2021-02-05
(CNBM) BENGBU DESIGN & RES INST FOR GLASS IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are a large number of weathered feldspar resources to be utilized in China. Weathered feldspar generally contains more impurities such as iron minerals, mica, garnet and weathered clay, and the quality is not high. If a single beneficiation method is used, A large part of feldspar and gangue minerals cannot be effectively separated, and qualified high-quality feldspar powder cannot be produced, and the utilization efficiency of feldspar minerals is not high

Method used

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  • A method for classifying and purifying weathered potassium feldspar ore
  • A method for classifying and purifying weathered potassium feldspar ore
  • A method for classifying and purifying weathered potassium feldspar ore

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Comparison scheme
Effect test

Embodiment 1

[0028] For the weathered potassium feldspar mine in a certain place in Guangxi, the mineral structure is loose-semi-loose, mainly light gray, taupe or slightly fleshy red, and the feldspar has been partially weathered into white kaolin or sandy soil, and biotite-like dark minerals and Brown iron spots, potassium feldspar grains are mainly distributed between 3~20mm.

[0029] The specific process steps of mineral purification and impurity removal are as follows:

[0030] (1) After the raw ore is washed, it is screened into three grades of +8mm, 5~8mm, and -5mm, where + means greater than, and - means less than;

[0031] (2) -5mm fine-grained minerals adopt the following steps:

[0032] Rod mill, the particle size of the rod mill product is controlled below 0.6mm, and then hydraulic classification is carried out to obtain classified sand settling and classified fine sand (tailings);

[0033] Classified sand settling is used for three magnetic separations. The magnetic separati...

Embodiment 2

[0044] The weathered potassium feldspar mine in a certain place in Anhui has a loose-semi-consolidated sandy structure. The ore is a regular striped feldspar, light fleshy red, semi-euhedral plate columnar, and the potassium feldspar grains are mainly distributed between 5 and 30mm.

[0045] The specific process conditions for mineral purification and impurity removal are as follows:

[0046] (1) After the raw ore is washed, it is screened into three grades of +10mm, 5~10mm, and -5mm;

[0047](2) -5mm minerals are purified through the process of "rod milling-classification-medium magnetic separation-strong magnetic separation-strong magnetic separation-positive flotation", the particle size of the rod mill product is controlled below 0.6mm, and the magnetic field strength of the third magnetic separation is 5000GS , 10000GS, 12000GS, positive flotation using H 2 SO 4 Adjust the pH to 2~3, the dosage of collector sodium petroleum sulfonate is 2.4kg / t, and the dosage of dodecy...

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Abstract

The invention discloses a process method for grading and purifying weathering type potassium feldspar ore. The method comprises the following steps that ore washing and sieving is carried out, whereinthe mineral is sieved into three grain grades products for sorting; the coarse grain grade is low in weathering degree and less in impurity content, and a process of crushing, powder grinding, magnetic separating and desliming is carried out for purifying to obtain high-quality potassium feldspar powder A for a ceramic industry; the middle grain grade is slightly low, and a process of powder grinding, magnetic separating, reverse flotation and positive flotation is carried out for purifying to obtain potassium feldspar powder B for the ceramic industry; the fine grain grade is serious in weathering and large in impurity content, and a process of ore grinding, grading, magnetic separating and positive flotation is carried out for purifying to obtain feldspar sand C for a glass industry. According to different mineral weathering degrees, the feldspar sand and feldspar powder with different specifications are respectively prepared according to the quality difference of each grain grade,comprehensive utilization of weathering type potassium feldspar minerals is realized.

Description

technical field [0001] The invention belongs to the field of mineral processing and purification, and in particular relates to a purification method of weathered potassium feldspar minerals. Background technique [0002] As an important industrial raw material, feldspar is widely used in ceramics, glass, chemical industry and other fields. The amount of feldspar in the ceramic industry accounts for about 30% of the total amount. In recent years, with the rapid development of the home improvement industry, the output of building and sanitary ceramics in my country has jumped to the first place in the world. The demand for high-quality potassium feldspar in the high-grade sanitary ceramics industry continues to grow. This type of feldspar has strict requirements on the content of potassium, sodium and impurities. It has high economic value, according to the QB / T1636-1992 industry standard: K feldspar qualification requirements for daily ceramics 2 O+ Na 2 O≥10.0%, first-class...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03B7/00B03B9/00B03D1/012B03D101/02
CPCB03B7/00B03B9/00B03D1/012B03D2201/02
Inventor 吴建新周新军李佩悦李佳张乾伟尚德兴
Owner (CNBM) BENGBU DESIGN & RES INST FOR GLASS IND CO LTD
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