Abstract: Described here is a method for recovering stainless steel from stainless steel slag, wherein the method comprises providing stainless steel slag, subjecting the stainless steel slag to dry milling followed by classifying the milled stainless steel slag to at least two fractions based on particle size characterised as small and middle fraction based on the particle size. The small and middle fractions are individually subjected to magnetic separation to separate a magnetic fraction from a non-magnetic fraction. The magnetic fractions are subjected to further separation to obtain particles with concentrated amount of stainless steel, which are subsequently recovered.

Abstract: A device for separating weakly magnetic first particles, for example hematite particles, from mixture (912) comprising the first particles (913) and less magnetic second particles (914) is presented. The device comprises first magnetizing equipment (901) for producing magnetic field and for moving the mixture so that mutually opposite polarity portions (N, S) of the magnetic field sweep the mixture in a sweeping direction and thereby deflect the direction of movement of the first particles towards the sweeping direction and away from the direction of movement of the second particles.

Abstract: A device for separating weakly magnetic first particles, for example hematite particles, from mixture (912) comprising the first particles (913) and less magnetic second particles (914) is presented. The device comprises first magnetizing equipment (901) for producing magnetic field and for moving the mixture so that mutually opposite polarity portions (N, S) of the magnetic field sweep the mixture in a sweeping direction and thereby deflect the direction of movement of the first particles towards the sweeping direction and away from the direction of movement of the second particles.

Abstract: An apparatus and method are disclosed for examining optically a sample carried in a plurality of wells. A holder is adapted to receive and hold in place a sample carrier. A plurality of excitation means selectively introduce excitation towards a spatially limited portion of a sample carrier held in place by said holder. Detecting means receive and detect emission radiation coupled out from a light output window of a sample carrier held in place by said holder. Said detecting means is common to said excitation means and is configured to receive emission radiation from a plurality of different spatially limited portions of a sample carrier held in place by said holder.

Abstract: A system (100, 200, 300, 400) for producing biogas from waste stream (101) including organic material includes a liquid waste container (102) and a solid waste container (103). In addition, it includes a separator (104) for at least partially separating liquid fraction into the liquid waste container (102) and solid fraction into the solid waste container (103) from the waste stream (101) so that the solid waste container includes more solid content than the liquid waste container. Furthermore, the system includes a communication member (106, 111) between the liquid waste container (102) and a mixer (105, 202) for introducing liquid from the liquid waste container to the waste stream portion containing solid fraction in order to extract more liquid from the solid fraction.

Abstract: A device is provided for holding a sample for optical examination. The device comprises a body that defines a plurality of spots or wells. One or more non-specific interacting surfaces in the spots or wells are capable of non-specific binding of a said sample, a luminophore label, or their combination. A light conducting layer comprises material that is essentially non-transparent to optical excitation radiation and essentially transparent to optical luminescent radiation. A light input window couples luminescent light into said light conducting layer, and a light output window couples light out from said light conducting layer.

Abstract: An apparatus and method are disclosed for examining optically a sample carried in a plurality of wells. A holder is adapted to receive and hold in place a sample carrier. A plurality of excitation means selectively introduce excitation towards a spatially limited portion of a sample carrier held in place by said holder. Detecting means receive and detect emission radiation coupled out from a light output window of a sample carrier held in place by said holder. Said detecting means is common to said excitation means and is configured to receive emission radiation from a plurality of different spatially limited portions of a sample carrier held in place by said holder.

Abstract: A calibration technique for a measurement device that produces a spark in an interpane space of an insulating glass unit to determine the content of an inert gas, in particular, argon. Standard calibration units are created which have the same construction as an IGU produced an assembly line. The standard calibration units are filled with varying percentages of argon/oxygen mixture. The calibration technique can be performed on an assembly line by aiming the measurement device at a particular insulating glass unit produced on the assembly line. The measurement device is activated to take a reading of the unit on the line. One of a plurality of calibration standard units of insulating glass units is selected that has substantially an identical construction as the unit on the line except that the calibration standard unit selected has a known, specific amount of certified argon gas that should be the same as the unit on the line. The measurement device is aimed at the calibration standard unit.

Abstract: An apparatus for non-destructively measuring gas compositions in insulated glazing units has an integrated structure that houses circuitry to generate a localized high voltage discharge utilizing a floating ground plane.

Abstract: An apparatus and method for measuring the color and gas fill concentration of insulating glass units is disclosed. One apparatus includes a color measuring device and gas fill concentration measuring device coupled to a production line for manufacturing insulating glass units. One method of the invention involves measuring the color and gas fill concentration of insulating glass units after they have been filled with gas and sealed.