Abstract: A pressure device has a rifled barrel, a rifled end cap, a section clamped to the barrel, a circular flange welded to a threaded male pipe connection, a plate with holes or a cone, a female cap receiving the plate and aligning the holes to the rifling in the barrel, and the flange threadily engaging the cap, securing the plate. The rifled barrel provides shearing, increased pressure, and higher temperatures upon the passing crop residue. The increased surface area of the rifling grooves increases temperature and pressure between the crop residue and the barrel wall. The rifling, when misaligned, creates a pressure chamber that further breaks down the molecules in the crop residue. The crop residue then enters a popper device. The pressure in the popper device forces the crop residue through the holes of plate or around an encased cone, relieving excess pressure and producing a nutritional animal feed.

Abstract: The invention is a method for the manufacturing of electroconductive composite materials based on carbon-polymer mixtures meant for use as coatings, electrodes and current collectors in electrical and electrochemical units, particularly in fuel cells. According to the invention, a mixture is formed in two successive steps. During the first step the polymer binder, at a temperature close to its melting point, is mixed in an extruder with the maximum amount of said carbon filler to provide a viscous mixture allowing extrusion as carbon-polymer sticks. In the second step, additional carbon filler is blended with the sticks to provide a necessary electrical and thermal conductivity of the composite material. The sticks and added carbon are mixed in a grinder, which simultaneously, subjects the blend to mechanochemical activation to provide high mechanical strength and high electrical and thermal conductivity. The process provides low production cost for articles obtained from the composite material.