Method for carrying out flotation of potassium feldspar under condition with neutral pH value

A technology for flotation of potassium feldspar and potassium feldspar, which is applied in flotation, solid separation and other directions, can solve the problem of high impurity content, high potassium feldspar concentrate grade and recovery rate, and unsatisfactory potassium feldspar concentrate grade. problem, to achieve the effect of enhancing hydrophobicity

Active Publication Date: 2018-09-28
BEIJING MINING & METALLURGICAL TECH GRP CO LTD
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Problems solved by technology

[0011] Aiming at the technical problems existing in the existing feldspar-quartz flotation separation technology, the present invention provides a method for flotation of potassium feldspar under the condition of neutral pH value, which can realize the effective separation of potassium feldspar and quartz under the condition of neutral pH value. Separation, less corrosion to flotation equipment, less environmental pollution, and the obtained potassium feldspar concentrate grade and recovery rate are high, thus solving the problem of potassium feldspar concentrate grade in the separation process of potassium feldspar and quartz under the condition of neutral pH value Problems such as unsatisfactory, high impurity content, and low flotation recovery rate of potassium feldspar concentrate can be solved for K 2 Potassium feldspar raw ore with O content of 7-10% is effectively developed and utilized, and K 2 Potassium feldspar concentrate with an O content of 10-14% and a recovery rate of 70-88%, meeting the ceramic industry's demand for potassium feldspar concentrate

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  • Method for carrying out flotation of potassium feldspar under condition with neutral pH value

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Embodiment approach

[0041] (1) In step A, when the granularity of potassium-containing feldspar material reaches -0.074mm and accounts for 60%, it can directly be made into potassium-containing feldspar slurry; when the granularity of potassium-containing feldspar material is thicker, it is better to The potassium-containing feldspar material is crushed and ground until the particle size is -0.074mm, accounting for 60%, and then made into potassium-containing feldspar slurry. Controlling the particle size of potassium-containing feldspar materials in this range helps to dissociate feldspar and quartz, and the grinding cost is relatively economical.

[0042] (2) In step A, the concentration of the solid phase in the potassium-containing feldspar slurry is preferably 30-45wt%, such as 30wt%, 31wt%, 32wt%, 33wt%, 34wt%, 35wt%, 36wt% %, 37wt%, 38wt%, 39wt%, 40wt%, 41wt%, 42wt%, 43wt%, 44wt%, 45wt% or specific point values ​​between the above-mentioned values, limited by space and for the sake of simp...

Embodiment 1

[0061] Such as figure 1 As shown, a neutral pH condition flotation method for potassium feldspar for K 2 O content is 9.65% potassium feldspar raw ore is processed ore dressing, also contains minerals such as quartz, chlorite, magnetite, limonite, hematite in this potassium feldspar raw ore, specific flotation potassium feldspar method can include The following steps:

[0062] Step a1, K 2 The potassium feldspar raw ore with an O content of 9.65% is ground to a particle size of -0.074mm, accounting for 60%, and made into a potassium feldspar slurry with a solid phase concentration of 40wt%.

[0063] Step b1, adding modified oleic acid and sodium petroleum sulfonate to the potassium-containing feldspar pulp described in step a1, the addition of modified oleic acid is 400g / t potassium-containing feldspar material, and the addition of sodium petroleum sulfonate is 500g / t of potassium-containing feldspar material, stirred for 6 minutes, and carried out impurity-removing flotati...

Embodiment 2

[0071] A neutral pH value condition flotation potassium feldspar method for the K 2 O content is 7.25% potassium feldspar raw ore is processed ore dressing, also contains minerals such as quartz, muscovite, limonite, hematite in this potassium feldspar raw ore, concrete flotation potassium feldspar method can comprise the following steps:

[0072] Step a2, K 2 The potassium feldspar raw ore with an O content of 7.25% was ground to a particle size of -0.074mm, accounting for 60%, and made into a potassium feldspar slurry with a solid phase concentration of 38wt%.

[0073] Step b2, adding modified oleic acid and sodium petroleum sulfonate to the potassium-containing feldspar pulp described in step a2, the addition of modified oleic acid is 300g / t potassium-containing feldspar material, and the addition of sodium petroleum sulfonate is 400g / t of potassium-containing feldspar material, stirred for 6 minutes, and subjected to impurity-removing flotation to remove iron-containing a...

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Abstract

The invention discloses a method for carrying out flotation of potassium feldspar under a condition with a neutral pH value. The method comprises the following steps: breaking and grinding a materialcontaining potassium feldspar to prepare ore pulp containing potassium feldspar; adding modified oleic acid and petroleum sodium sulfonate into the ore pulp containing potassium feldspar, carrying outflotation and removing iron-containing impurities and mud-containing impurities to obtain the impurity-free ore pulp; adding sodium oleate, an activator and an inhibitor into the ore pulp, and carrying out rough separation to obtain roughly-separated concentrates and roughly-separated tailings; adding sodium oleate, the activator and the inhibitor into the roughly-separated tailings, and scavenging to obtain scavenged middlings and scavenged tailings; adding the inhibitor into the roughly-separated concentrates, and carrying out concentration to obtain potassium feldspar concentrates. The method is capable of effectively separating potassium feldspar from quartz under the condition with the neutral pH value, and is low in corrosion to flotation equipment and low in pollution to the environment; the potassium feldspar concentrates are high in grade and recovery rate; the potassium feldspar raw ores with content of K2O of 7-10% can be effectively developed and used.

Description

technical field [0001] The invention relates to the technical field of feldspar flotation, in particular to a method for flotation of potassium feldspar under the condition of neutral pH value. Background technique [0002] Feldspar and quartz, two rock-forming minerals, are widely distributed, abundant in reserves, and have many uses. They can be used in many fields such as building materials, glass ceramics, electronic appliances, and refractory materials. For a long time, the mining and utilization of feldspar and quartz in my country has been mainly concentrated in high-quality feldspar and quartz deposits in various places. A large number of low-grade ore deposits have not been effectively developed and utilized, which is mainly related to the development of mineral processing technology at the present stage. [0003] Feldspar and quartz belong to the framework silicate minerals, and their similar structures lead to their similar physical properties and chemical composi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/002B03B1/00B03B1/04B03D101/06B03D103/04
CPCB03B1/00B03B1/04B03D1/002B03D2201/06B03D2203/04
Inventor 呼振峰凌石生刘方王中明刘崇峻刘书杰刘慧南路亮赵杰苏建芳肖巧斌张云海谭欣杨林峰
Owner BEIJING MINING & METALLURGICAL TECH GRP CO LTD
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