公开(公告)号：US20140008229A1

公开(公告)日：2014-01-09

申请号：US13765924

申请日：2013-02-13

Applicant: DPRA CANADA INCORPORATED

Inventor： Paul Garcia ,  Bruce S. Beattie ,  Ben Harris ,  Doug Kimzey ,  Robert C. Parrott ,  James Micak

IPC: C02F1/48

CPC classification number: C02F1/48 ,  C02F1/04 ,  C02F1/4698 ,  C02F2101/325 ,  C02F2103/10 ,  C02F2201/46135 ,  C02F2201/4615 ,  C02F2201/46175 ,  C02F2209/09

Abstract: There is a method described of treating tailings which are composed of at least some water and clay particles. Within the tailings, at least some water molecules are weakly bond to the clay particles to form a gel like fluid from which water does not readily separate. An alternating current is applied to the tailings to change the electro-chemical properties of the tailings to reduce the weak bonding between the water and the clay particles so that water within the treated tailings is able to separate. Water within the treated tailings is then allowed to separate without further application of electricity. In some embodiments, the treated tailings are allowed to separate through evaporation. Liquid tailings may also be treated with alternating current by applying alternating current to the liquid tailings at a voltage gradient range of 1 to 5 V/cm for a total duration of 24 to 300 hours. The application of alternating current may further comprise applying alternating current at a frequency of 1 to 30 Hz.

Abstract translation: 有一种处理由至少一些水和粘土颗粒组成的尾矿的方法。 在尾矿中，至少一些水分子与粘土颗粒很弱地结合，形成凝胶，如水不容易分离出来的凝胶。 向尾矿施加交流电流以改变尾矿的电化学性质，以减少水和粘土颗粒之间的弱结合，使得经处理的尾矿中的水能够分离。 然后允许经处理的尾矿中的水分离，无需进一步施加电力。 在一些实施方案中，经处理的尾矿经蒸发分离。 液态尾矿也可以用交流电处理，通过在1至5V / cm的电压梯度范围内向液体尾矿施加交流电，总持续时间为24至300小时。 交流电的应用还可以包括以1至30Hz的频率施加交流电。

公开(公告)号：US09428408B2

公开(公告)日：2016-08-30

申请号：US14047730

申请日：2013-10-07

Applicant: DPRA Canada Incorporated

Inventor： Bruce S. Beattie ,  Paul Garcia ,  Doug Kimzey ,  Ben Harris ,  Robert C. Parrott ,  James Micak

IPC: C02F1/463 ,  C02F103/10

CPC classification number: C02F1/463 ,  C02F2103/10 ,  C02F2201/4613

Abstract: There is a method of facilitating the consolidation of fine tailings through the application of an electrical current. The fine tailings include a combination of at least some water and some clay particles. Electrodes are placed into contact with the fine tailings. An AC voltage with a DC offset is applied to the electrodes to separate water from the clay particles and to induce movement of the separated water to a collection area. The separated clay particles can consolidate more readily than unseparated clay particles. In an embodiment, the fine tailings are mixed fine oil sands extraction tailings which include residual hydrocarbons. In an embodiment, the application of an AC voltage with a DC offset across the electrodes includes applying an AC voltage of about 1 V/cm and a DC offset of about ½ V/cm.

Abstract translation: 有一种通过施加电流促进细尾矿的合并的方法。 细尾矿包括至少一些水和一些粘土颗粒的组合。 电极与精细尾矿接触。 将具有DC偏移的AC电压施加到电极以将粘土颗粒分离出水并引导分离的水移动到收集区域。 分离的粘土颗粒可以比未分离的粘土颗粒更容易地固结。 在一个实施方案中，细尾矿是包括残余烃的混合精细油砂提取尾矿。 在一个实施例中，跨越电极施加具有DC偏移的AC电压包括施加约1V / cm的AC电压和约1/2V / cm的DC偏移。

公开(公告)号：US20150096901A1

公开(公告)日：2015-04-09

申请号：US14047730

申请日：2013-10-07

Applicant: DPRA CANADA INCORPORATED

Inventor： Bruce S. Beattie ,  Paul Garcia ,  Doug Kimzey ,  Ben Harris ,  Robert C. Parrott ,  James Micak

IPC: C02F1/463

CPC classification number: C02F1/463 ,  C02F2103/10 ,  C02F2201/4613

Abstract: There is a method of facilitating the consolidation of fine tailings through the application of an electrical current. The fine tailings include a combination of at least some water and some clay particles. Electrodes are placed into contact with the fine tailings. An AC voltage with a DC offset is applied to the electrodes to separate water from the clay particles and to induce movement of the separated water to a collection area. The separated clay particles can consolidate more readily than unseparated clay particles. In an embodiment, the fine tailings are mixed fine oil sands extraction tailings which include residual hydrocarbons. In an embodiment, the application of an AC voltage with a DC offset across the electrodes includes applying an AC voltage of about 1 V/cm and a DC offset of about ½ V/cm.

Abstract translation: 有一种通过施加电流促进细尾矿的合并的方法。 细尾矿包括至少一些水和一些粘土颗粒的组合。 电极与精细尾矿接触。 将具有DC偏移的AC电压施加到电极以将粘土颗粒分离出水并引导分离的水移动到收集区域。 分离的粘土颗粒可以比未分离的粘土颗粒更容易地固结。 在一个实施方案中，细尾矿是包括残余烃的混合精细油砂提取尾矿。 在一个实施例中，跨越电极施加具有DC偏移的AC电压包括施加约1V / cm的AC电压和约1/2V / cm的DC偏移。