Method and system for treating fluid and flotation arrangement

A method for treating fluid, wherein the method comprises:

• a fluid feeding step for feeding fluid in a fluid feeding pipe into a fluid reactor vessel,
• a bubbles feeding step for feeding bubbles of first fluid mixture containing first carrier fluid and first active fluid into fluid flowing in the fluid feeding pipe by means of a sparger apparatus in fluid connection with the fluid feeding pipe,
• a fluid mixture feeding step for feeding first fluid mixture to the sparger apparatus in a first fluid mixture feeding pipe from a first fluid source for first fluid mixture that is in fluid connection with the first fluid source for first fluid mixture and that is in fluid connection with the sparger apparatus by means of the first fluid mixture feeding pipe,
• wherein first fluid mixture is configured to react with said fluid in a reaction step in at least one of a first reaction pipe section of the fluid feeding pipe, which first reaction pipe section the fluid feeding pipe is downstream of the sparger apparatus and upstream of the fluid reactor vessel, and the fluid reactor vessel,
• a fluid mixture discharging step for discharging first fluid mixture from the fluid reactor vessel and for feeding first fluid mixture to the first fluid source for first fluid mixture in a first fluid mixture return pipe that is in fluid connection with the fluid reactor vessel and with the first fluid source for first fluid mixture,
• a fluid mixture analyzing step for measuring the relative content of first active fluid in the first fluid mixture with a first fluid analyzer,
• by functionally connecting a first active fluid source in fluid connection with the first fluid source for first fluid mixture,
• by functionally connecting the first fluid analyzer and the first active fluid source,
• by controlling the first active fluid source with the first fluid analyzer in response to the relative content of first active fluid in the first fluid mixture as measured by the first fluid analyzer, and
• a fluid discharging step for discharging treated fluid from the fluid reactor vessel by means of fluid discharge pipe that is in fluid connection with the fluid reactor vessel,
• and by using treated fluid discharged in the fluid discharging step in a mineral beneficiation flotation step,
• characterized by feeding treated fluid in the fluid discharging step in the fluid discharge pipe to an additional fluid reactor vessel,
• by the bubbles feeding step comprise additionally feeding bubbles of a second fluid mixture containing second carrier fluid and second active fluid into treated fluid flowing in the fluid discharge pipe by means of an additional sparger apparatus that is in fluid connection with the fluid discharge pipe,
• by the fluid mixture feeding step comprises additionally feeding second fluid mixture to the additional sparger apparatus with a second fluid mixture feeding pipe from a second fluid source for second fluid mixture that is in fluid connection with the second fluid source for second fluid mixture and that is in fluid connection with the additional sparger apparatus with the second fluid mixture feeding pipe,
• wherein second fluid mixture is configured to react with said treated fluid in an additional reaction step in at least one of a second reaction pipe section of the fluid discharge pipe, which second reaction pipe section of the fluid discharge pipe is downstream of the additional sparger apparatus and upstream of the additional fluid reactor vessel, and the additional fluid reactor vessel,
• by the fluid mixture discharging step comprise additionally discharging second fluid mixture from the additional fluid reactor vessel and for feeding second fluid mixture in a second fluid return pipe to the second fluid source for second fluid mixture with the second fluid return pipe that is in fluid connection with the additional fluid reactor vessel and that is in fluid connection with the second fluid source for second fluid mixture,
• by a second fluid mixture analyzing step for measuring the relative content of second active fluid in the second fluid mixture with a second fluid analyzer,
• by functionally connecting a second active fluid source in fluid connection with the second fluid source for second fluid mixture,
• by functionally connecting the second fluid analyzer and the second active fluid source,
• by controlling the second active fluid source with the second fluid analyzer in response to the relative content of second active fluid in the second fluid mixture as measured by the second fluid analyzer, and
• by the fluid discharging step comprise additionally discharging treated fluid from the additional fluid reactor vessel by means of an additional fluid discharge pipe that is in fluid connection with the additional fluid reactor vessel.

A system for treating fluid, wherein the system comprises

• a fluid feeding pipe configured to feed fluid into a fluid reactor vessel,
• a sparger apparatus in fluid connection with the fluid feeding pipe and configured to feed bubbles of first fluid mixture containing first carrier fluid and first active fluid into fluid flowing in the fluid feeding pipe, wherein the fluid feeding pipe comprises a first reaction pipe section downstream of the sparger apparatus and upstream of the fluid reactor vessel and wherein first fluid mixture and fluid is configured to react in at least one of the first reaction pipe section of the fluid feeding pipe and the fluid reactor vessel,
• a first fluid source for first fluid mixture that is in fluid connection with the sparger apparatus by means of a first fluid mixture feeding pipe configured to feed first fluid mixture from the first fluid source for first fluid mixture to the sparger apparatus,
• a first fluid mixture return pipe that is in fluid connection with the fluid reactor vessel and with the first fluid source for first fluid mixture and that is configured to feed first fluid mixture from the fluid reactor vessel to the first fluid source for first fluid mixture,
• a first fluid analyzer in contact with the first fluid mixture and configured to measure the relative content of first active fluid in the first fluid mixture,
• a first active fluid source in fluid connection with the first fluid source for first fluid mixture,
• wherein the first fluid analyzer and the first active fluid source being functionally connected,
• by the first fluid analyzer being configured to control the first active fluid source in response to the measured relative content of first active fluid in the first fluid mixture, and
• a fluid discharge pipe that is in fluid connection with the fluid reactor vessel and that is configured to discharge treated fluid from the fluid reactor vessel,
• and by the system being in fluid connection with a mineral beneficiation flotation arrangement comprising flotation vessels arranged in series,
• wherein the fluid discharge pipe being in fluid connection with an additional fluid reactor vessel and configured to feed treated fluid from the fluid reactor vessel to the additional fluid reactor vessel,
• by an additional sparger apparatus in fluid connection with the fluid discharge pipe and configured to feed bubbles of first fluid mixture into treated fluid flowing in the fluid discharge pipe, wherein the fluid discharge pipe comprises a second reaction pipe section downstream of the additional sparger apparatus and upstream of the additional fluid reactor vessel and wherein first fluid mixture and treated fluid is configured to react in at least one of the second reaction pipe section of the fluid discharge pipe and the additional fluid reactor vessel,
• by the first fluid source for first fluid mixture is additionally in fluid connection with the additional sparger apparatus by means of the first fluid mixture feeding pipe and by the first fluid mixture feeding pipe being additionally configured to feed fluid mixture from the first fluid source for first fluid mixture to the additional sparger apparatus,
• by the first fluid mixture return pipe being additionally in fluid connection with the additional fluid reactor vessel and for feeding first fluid mixture to the first fluid source for first fluid mixture in the first fluid mixture return pipe from the additional fluid reactor vessel to the first fluid source for first fluid mixture, and
• by an additional fluid discharge pipe that is in fluid connection with the additional fluid reactor vessel and that is configured to discharge treated fluid from the additional fluid reactor vessel.

A system for treating fluid, wherein the system comprises:

• a fluid feeding pipe configured to feed fluid into a fluid reactor vessel,
• a sparger apparatus in fluid connection with the fluid feeding pipe and configured to feed bubbles of first fluid mixture containing first carrier fluid and first active fluid into fluid flowing in the fluid feeding pipe, wherein the fluid feeding pipe comprises a first reaction pipe section downstream of the sparger apparatus and upstream of the fluid reactor vessel and wherein first fluid mixture and fluid is configured to react in at least one of the first reaction pipe section of the fluid feeding pipe and the fluid reactor vessel,
• a first fluid source for first fluid mixture that is in fluid connection with the sparger apparatus by means of a first fluid mixture feeding pipe configured to feed first fluid mixture from the first fluid source for first fluid mixture to the sparger apparatus,
• a first fluid mixture return pipe that is in fluid connection with the fluid reactor vessel and with the first fluid source for first fluid mixture and that is configured to feed first fluid mixture from the fluid reactor vessel to the first fluid source for first fluid mixture,
• a first fluid analyzer in contact with the first fluid mixture and configured to measure the relative content of first active fluid in the first fluid mixture,
• a first active fluid source in fluid connection with the first fluid source for first fluid mixture,
• wherein the first fluid analyzer and the first active fluid source being functionally connected,
• by the first fluid analyzer being configured to control the first active fluid source in response to the measured relative content of first active fluid in the first fluid mixture, and
• a fluid discharge pipe that is in fluid connection with the fluid reactor vessel and that is configured to discharge treated fluid from the fluid reactor vessel,
• and by the system being in fluid connection with a mineral beneficiation flotation arrangement comprising flotation vessels arranged in series,
• wherein the fluid discharge pipe being in fluid connection with an additional fluid reactor vessel and configured to feed treated fluid from the fluid reactor vessel to the additional fluid reactor vessel,
• by an additional sparger apparatus in fluid connection with the fluid discharge pipe and configured to feed bubbles of second fluid mixture containing second carrier fluid and second active fluid into treated fluid flowing in the fluid discharge pipe, wherein the fluid discharge pipe comprises a second reaction pipe section downstream of the additional sparger apparatus and upstream of the additional fluid reactor vessel and wherein second fluid mixture and treated fluid is configured to react in at least one of the second reaction pipe section of the fluid feeding pipe and the additional fluid reactor vessel,
• a second fluid source for second fluid mixture that is in fluid connection with the additional sparger apparatus by means of a second fluid mixture feeding pipe configured to feed second fluid mixture from the second fluid source for second fluid mixture to the additional sparger apparatus,
• a second fluid mixture return pipe that is in fluid connection with the additional fluid reactor vessel and that is in fluid connection with the second fluid source for second fluid mixture and that is configured to feed second feed fluid mixture from the additional fluid reactor vessel to the second fluid source for second fluid mixture,
• a second fluid analyzer configured to measure the relative content of second active fluid in the second fluid mixture,
• a second active fluid source in fluid connection with the second fluid source for second fluid mixture,
• wherein the second fluid analyzer and the second active fluid source being functionally connected,
• by the second fluid analyzer being configured to control the second active fluid source in response to the measured relative content of second active fluid in the second fluid mixture, and
• by an additional fluid discharge pipe that is in fluid connection with the additional fluid reactor vessel and that is configured to discharge treated fluid from the additional fluid reactor vessel.

A flotation arrangement comprising:

• a mineral beneficiation flotation arrangement comprising flotation vessels arranged in series, a grinder that is in fluid connection with the first flotation vessel of said flotation vessels arranged in series, and
• at least two systems for treating fluid each system comprising:
• a fluid feeding pipe configured to feed fluid into a fluid reactor vessel,
• a sparger apparatus in fluid connection with the fluid feeding pipe and configured to feed bubbles of first fluid mixture containing first carrier fluid and first active fluid into fluid flowing in the fluid feeding pipe, wherein the fluid feeding pipe comprises a first reaction pipe section downstream of the sparger apparatus and upstream of the fluid reactor vessel and wherein first fluid mixture and fluid is configured to react in at least one of the first reaction pipe section of the fluid feeding pipe and the fluid reactor vessel,
• a first fluid source for first fluid mixture that is in fluid connection with the sparger apparatus by means of a first fluid mixture feeding pipe configured to feed first fluid mixture from the first fluid source for first fluid mixture to the sparger apparatus,
• a first fluid mixture return pipe that is in fluid connection with the fluid reactor vessel and with the first fluid source for first fluid mixture and that is configured to feed first fluid mixture from the fluid reactor vessel to the first fluid source for first fluid mixture,
• a first fluid analyzer in contact with the first fluid mixture and configured to measure the relative content of first active fluid in the first fluid mixture,
• a first active fluid source in fluid connection with the first fluid source for first fluid mixture,
• wherein the first fluid analyzer and the first active fluid source being functionally connected,
• by the first fluid analyzer being configured to control the first active fluid source in response to the measured relative content of first active fluid in the first fluid mixture, and
• a fluid discharge pipe that is in fluid connection with the fluid reactor vessel and that is configured to discharge treated fluid from the fluid reactor vessel,
• and by the system being in fluid connection with a mineral beneficiation flotation arrangement comprising flotation vessels arranged in series,
• wherein a first of said least two systems for treating fluid is in fluid connection with the grinder of the mineral beneficiation flotation arrangement and configured to feed treated fluid to the grinder of the mineral beneficiation flotation arrangement, and
• wherein a second of said least two systems for treating fluid is in fluid connection with the mineral beneficiation flotation arrangement at a point downstream of the grinder of the mineral beneficiation flotation arrangement and upstream of the first flotation vessel of said flotation vessels arranged in series of the mineral beneficiation flotation arrangement and configured to feed treated fluid to said point downstream of the grinder of the mineral beneficiation flotation arrangement and upstream of the first flotation vessel of said flotation vessels arranged in series of the mineral beneficiation flotation arrangement.