摘要:
An arrangement for feeding a fine-particle material to be separated to an electrostatic free-fall cutter is formed as a funnel with braking inserts and inclined walls whose edges limit a small elongated rectangular discharge slot, wherein a greater wall is inclined to an opposite vertical wall which has an inclined downwardly directed guiding member, and a wedge-shaped projection with an upper horizontal surface is located at the lower edge of the inclined wall and extends into the discharge slot.
摘要:
An electrostatic free-fall separator has a feeding arrangement located upstream of the separator for feeding of fine-particle material to be separated into the electrostatic free-fall separator, wherein the feeding arrangement is formed as a funnel with braking inserts of an electrically insulated material and has walls limiting at their lower edge a longitudinal outlet slot, wherein the funnel has an inlet which is formed by one wall portion which is parallel to the outlet slot and an opposite inclined guiding surface with a lower edge extending parallel to the one wall portion so as to limit simultaneously a passage leading to the outlet slot, and two substantially vertical electrodes are arranged below the passage at a distance from one another which is smaller than the width of the passage.
摘要:
Crude potash salt is conditioned for separation into its components by means of an electrostatic field by grinding the salt to disintegration and contacting the ground salt with a conditioning agent, such as salicylic acid, which has been converted to the gaseous state, such that the conditioning agent draws up onto the surfaces of the salt crystals by absorption. The quantity of the conditioning agent employed is adjusted by varying the evaporation temperature and/or by varying the volume of heated air and/or inert gas, serving as a carrier material.
摘要:
An elecrtrostatic separation of paper- and synthetic plastic material-containing mixtures is performed by comminuting the mixture, triboelectrically charging the comminuted mixture, and supplying it into a free-fall separator, wherein a paper-enriched and a synthetic plastic material-enriched fraction are produced, and in some cases they can be treated in a second electrostatic separation step to pure products.
摘要:
A process is disclosed for the preparation of milled crude potash salts containing kieserite, whereby the crude potash salt is conditioned at first with a chemical conditioning agent and subsequently with an auxiliary conditioning agent, whereupon the crude potash salt is fed to an electrostatic free fall separator.
摘要:
A carnallite-containing crude salt is separated into a carnallite fraction, a sylvite fraction and an abandonable residue by grinding the salt to an average particle size of about 1.5 mm., conditioning the particles in a conventional manner with from 5-300 g/t of a conventional conditioning agent adjusting the relative humidity of the conditioned particles to 5-25%, and subjecting the resulting particles to electrostatic separation in two stages, wherein in the first stage the particles are subjected to a high voltage electric field having a field length of 0.4 to 1.2 m to separate a carnallite fraction by imparting to the carnallite fraction a high sidewards velocity relative to the initial downward velocity upon entering the field, thereby causing deflection of the carnallite away from a middlings fraction, and wherein in the second stage the first stage middling fracton is subjected to a second high voltage electric field having a field length of 1.5 to 2.5 m to f or m a sylvite fraction, a second middlings fraction which also has a high sidewards velocity imparted thereto relative to the initial downward velocity upon entry into the second field thereby causing deflection of the sylvite fraction away from and an abandonable residue which has a sidewards velocity imparted thereto opposite in direction to the sidewards velocity of the sylvite for deflection therefrom and from the second middlings fraction.
摘要翻译:含有光卤石的粗盐通过将盐研磨至约1.5mm的平均粒径,分离成光卤石级分,硅藻土级分和可弃残余物,以常规方式用5-300g / t调理颗粒 将调节颗粒的相对湿度调节至5-25%的常规调理剂,并将所得颗粒进行两个阶段的静电分离,其中在第一阶段中,对颗粒进行具有场长度的高压电场 为0.4〜1.2μm,通过使光卤石部分在进入场时相对于初始向下速度施加高的侧向速度来分离光卤石部分,从而引起光卤石偏离中间部分,并且其中在第二阶段中 将第一阶段中间分枝经历场长为1.5至2.5μm的第二高电压电场至f或ma sylvite fra 第二中间部分在进入第二场时相对于初始向下速度赋予其较高的侧向速度,从而导致锯齿岩部分偏离,并且可抛弃的残余物具有向其相反的方向施加的侧向速度 以及从第二中间部分偏转的硅藻土的侧向速度。