Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Resource utilization method of mine high-iron and high-acid wastewater neutralization slag
The invention discloses a resource utilization method of mine high-iron and high-acid wastewater neutralization slag. Magnetic separation is performed on iron-containing substances in the neutralization slag by adopting a high-gradient magnetic separator according to the difference of specific magnetization coefficients of ferric hydroxide and gypsum, and magnetic particles are adsorbed on the surface of a magnetic medium for enrichment by controlling the magnetic field intensity; and non-magnetic particles flow away from a tailing hopper, so that the gypsum and the ferric hydroxide in the neutralization slag are preliminarily separated. Then the hydrophobic (aerophile) characteristic of the mineral surface is changed through the interaction of a flotation reagent and mineral particles. In the stirring and inflating process, the mineral particles make contact with and collide with bubbles, the particles with good floatability are selectively attached to the bubbles and are carried to rise to form a mineralized foam layer composed of gas-liquid-solid three phases, the mineralized foam layer is mechanically scraped or overflows from the ore pulp face, and a flotation concentrate product is obtained. Mineral particles which cannot be floated are discharged from tailing products along with the ore pulp.
本发明公开了一种矿山高铁高酸废水中和渣的资源化利用方法，利用氢氧化铁和石膏的比磁化系数差异，采用高梯度磁选机对中和渣中含铁物质进行磁选分离，通过控制磁场强度，将磁性颗粒吸附在磁介质表面进行富集；非磁性颗粒从尾矿斗流走，从而将中和渣中石膏和氢氧化铁进行初步分离。然后通过浮选药剂与矿物颗粒相互作用，改变矿物表面的疏水(亲气)特性。在搅拌充气过程中矿物颗粒与气泡接触、碰撞，使可浮性好的颗粒选择性粘附于气泡并被携带上升成气‑液‑固三相组成的矿化泡沫层，经过机械刮取或从矿浆面溢出，得到浮选精矿产品。不能浮选的矿物颗粒，随矿浆从尾矿产品排出。
Resource utilization method of mine high-iron and high-acid wastewater neutralization slag
The invention discloses a resource utilization method of mine high-iron and high-acid wastewater neutralization slag. Magnetic separation is performed on iron-containing substances in the neutralization slag by adopting a high-gradient magnetic separator according to the difference of specific magnetization coefficients of ferric hydroxide and gypsum, and magnetic particles are adsorbed on the surface of a magnetic medium for enrichment by controlling the magnetic field intensity; and non-magnetic particles flow away from a tailing hopper, so that the gypsum and the ferric hydroxide in the neutralization slag are preliminarily separated. Then the hydrophobic (aerophile) characteristic of the mineral surface is changed through the interaction of a flotation reagent and mineral particles. In the stirring and inflating process, the mineral particles make contact with and collide with bubbles, the particles with good floatability are selectively attached to the bubbles and are carried to rise to form a mineralized foam layer composed of gas-liquid-solid three phases, the mineralized foam layer is mechanically scraped or overflows from the ore pulp face, and a flotation concentrate product is obtained. Mineral particles which cannot be floated are discharged from tailing products along with the ore pulp.
本发明公开了一种矿山高铁高酸废水中和渣的资源化利用方法，利用氢氧化铁和石膏的比磁化系数差异，采用高梯度磁选机对中和渣中含铁物质进行磁选分离，通过控制磁场强度，将磁性颗粒吸附在磁介质表面进行富集；非磁性颗粒从尾矿斗流走，从而将中和渣中石膏和氢氧化铁进行初步分离。然后通过浮选药剂与矿物颗粒相互作用，改变矿物表面的疏水(亲气)特性。在搅拌充气过程中矿物颗粒与气泡接触、碰撞，使可浮性好的颗粒选择性粘附于气泡并被携带上升成气‑液‑固三相组成的矿化泡沫层，经过机械刮取或从矿浆面溢出，得到浮选精矿产品。不能浮选的矿物颗粒，随矿浆从尾矿产品排出。
Resource utilization method of mine high-iron and high-acid wastewater neutralization slag
一种矿山高铁高酸废水中和渣的资源化利用方法
WU ZENGLING (Autor:in) / XU TAO (Autor:in) / ZOU LAICHANG (Autor:in) / WANG HONG (Autor:in) / ZHUANG RONGCHUAN (Autor:in)
10.12.2021
Patent
Elektronische Ressource
Chinesisch
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