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A method for recovering feldspar from molybdenum tailings
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A technology for molybdenum tailings and feldspar, which is applied in chemical instruments and methods, flotation, wet separation, etc., can solve the problem of incapable of recycling molybdenum tailings, and achieve the effect of reducing tailings stockpile and significant environmental benefits.
Active Publication Date: 2016-08-10
BEIJING GENERAL RES INST OF MINING & METALLURGY
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[0003] With the continuous reduction of feldspar rich ore resources, a large number of low-grade potassium-sodium feldspar mineral resources in molybdenum tailings need to be developed and utilized. It is the key to study an efficient and applicable mineral processing technology, while the traditional feldspar mineral processing technology is only for long-term mineral processing. Carry out simple impurity removal to meet the needs of industrial raw materials; or adopt HF process to flotation and separate impurities such as feldspar and quartz, but the HF process has been strictly prohibited by the environmental protection department, so the traditional feldspar beneficiation process cannot be effective Utilization of low-grade potassium albite feldspar from molybdenum tailings
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example 1
[0031] The metal minerals in the molybdenum tailings of a molybdenum mine in Heilongjiang are mainly pyrite, sphalerite, pyrrhotite, galena, arsenopyrite, ilmenite, limonite, mica, magnetite, rutile, red Iron ore, etc.; non-metallic minerals are mainly feldspar, quartz, calcite, muscovite, sericite, illite, kaolinite, and a small amount of titanite, apatite, etc.
[0032] Adopt the technical process described in the above method embodiment to finally obtain the feldspar concentrate production rate of 28.48%, K 2 O grade is 11.54%, Na 2 O grade is 2.51%, K 2 O recovery was 47.73%; Na 2 The recovery rate of O is 40.30%, and the feldspar concentrate meets the quality standard of potassium feldspar for potash fertilizer and the quality standard of potash feldspar for ceramic industry.
example 2
[0034] The metal minerals in the molybdenum tailings of a molybdenum mine in Inner Mongolia are mainly pyrite, magnetite, ilmenite, rutile, siderite, hematite, limonite and other minerals, and the non-metallic minerals are mainly potassium feldspar and clinoplasty Feldspar, quartz, biotite, chlorite, calcite, apatite, muscovite, dolomite, barite, pyroxene, talc, zircon, etc., K 2 O grade is 4.28%, Na 2 O grade is 2.77%.
[0035] Adopt the technological process described in the above-mentioned method embodiment to finally obtain feldspar concentrate productive rate 18.62%, in the concentrate, K 2 The O grade is 8.62%, and the recovery rate is 37.88%; Na 2 The O grade is 4.39%, the recovery rate is 29.90%; the TFe content in the feldspar concentrate is 0.42%.
[0036] In summary, the above-mentioned process for recovering feldspar from molybdenum tailings includes the following advantages:
[0037] 1) The process has strong adaptability, and is applicable to all molybdenum b...
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Abstract
The invention discloses a method for recovering feldspar from molybdenum dressing tailings. First, the molybdenum dressing tailings are subjected to gravity separation to remove fine mud and heavy minerals; Remove magnetic and weak magnetic minerals; then add sodium oleate and amine collectors to flotation residual minerals that can react chemically with sulfuric acid to obtain mixed minerals of feldspar and quartz; add sulfuric acid to the mixed minerals to adjust the pH of the pulp value, and flotation of feldspar using amine collectors to finally obtain feldspar concentrate. The method solves the problem of comprehensive recovery of low-grade potassium albite in the molybdenum beneficiation tailings, is conducive to obtaining high-grade feldspar concentrate, reduces the tailings stockpile, and has significant environmental benefits.
Description
technical field [0001] The invention relates to the technical field of mineral processing, in particular to a method for recovering feldspar from molybdenum beneficiation tailings. Background technique [0002] my country is a country rich in molybdenum resource reserves, and a large molybdenum mine can produce more than 10 million tons of tailings per year. K is generally contained in molybdenum tailings 2 O2%-7%, Na 2 O1.5%-3%, the content of feldspar minerals is generally 30-60%. There are many kinds of impurities in molybdenum tailings, complex components, and some impurities are similar to feldspar in buoyancy, which has a great impact on the quality of feldspar concentrate. In general, the metal minerals in molybdenum tailings mainly include pyrite, ilmenite, rutile, siderite, hematite, limonite and other minerals, and the non-metallic minerals are mainly feldspar (potassium feldspar and albite ), quartz, mica, chlorite and calcite, apatite, mica, dolomite, kaolin,...
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Patent Type & Authority Patents(China)
IPC IPC(8): B03B7/00B03D1/018B03D101/02B03D103/02
Inventor 于传兵宋振国宋磊李成必周少珍胡志凯于洋陈经华
Owner BEIJING GENERAL RES INST OF MINING & METALLURGY
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