A production device for preparing a building material using a fine particle silt in iron tailings includes an operation desk and a grinding device. During movement of edge plates, gears are located inside a side groove and keep meshing with toothed grooves, the edge plates will drive various gears to rotate along a same direction and drive grinding balls and connecting shafts to rotate while moving, the grinding balls will perform grinding treatment on the fine particle silt at the inner end of the grinding cabinet while rotating.

An agitator ball mill includes a grinding chamber, a rotatably mounted agitator shaft, which protrudes into the grinding chamber and on which agitator elements, in the form of paddle wheels, are arranged spaced apart from one another axially, and an inlet for supplying material to be ground and grinding bodies and an outlet for removal of the ground material. The agitator elements are constructed in such a way that, during operation, they convey a mixture consisting of material to be ground or dispersed and grinding bodies through their interior outwards away from the agitator shaft. In the grinding chamber there are arranged return conveyor elements which are joined to the agitator shaft for conjoint rotation therewith and which convey the mixture laterally alongside and/or between the agitator elements inwards towards the agitator shaft.

An agitator ball mill includes a grinding chamber, a rotatably mounted agitator shaft, which protrudes into the grinding chamber and on which agitator elements, in the form of paddle wheels, are arranged spaced apart from one another axially, and an inlet for supplying material to be ground and grinding bodies and an outlet for removal of the ground material. The agitator elements are constructed in such a way that, during operation, they convey a mixture consisting of material to be ground or dispersed and grinding bodies through their interior outwards away from the agitator shaft. In the grinding chamber there are arranged return conveyor elements which are joined to the agitator shaft for conjoint rotation therewith and which convey the mixture laterally alongside and/or between the agitator elements inwards towards the agitator shaft.

Disclosed is a method of mechanically crushing microalgae cells of the genus Chlorella at an industrial scale, the mechanical crushing being carried out in a horizontal ball mill system. In the method, the balls have an apparent density of between 2 and 3.5 kg/l, the filling rate of the crushing chamber is greater than or equal to 80%, and preferably greater than or equal to 85%, and the mechanical crushing is carried out continuously by a series of successive passes.

Disclosed is a method of mechanically crushing microalgae cells of the genus Chlorella at an industrial scale, the mechanical crushing being carried out in a horizontal ball mill system. In the method, the balls have an apparent density of between 2 and 3.5 kg/l, the filling rate of the crushing chamber is greater than or equal to 80%, and preferably greater than or equal to 85%, and the mechanical crushing is carried out continuously by a series of successive passes.

An apparatus and continuous process for making milled solid in liquid dispersions comprises several steps: 1) Forming a pre-mill mixture of pre-mix, milling media, and previously milled dispersion. 2) Milling the pre-mill mixture to form a milled mixture of milling media and milled dispersion. 3) Separating a portion of the milled dispersion, which is substantially free of milling media, from the milled mixture. 4) Recycling the un-separated mixture by adding additional pre-mix to form the pre-mill mixture to create a continuous milling process. The pre-mix comprises a liquid and a solid. The process is a continuous process and the milling media is recycled through the milling step. Much of the milled dispersion is also cycled through the milling step several times and only a portion of the milled dispersion, which is substantially free of milling media, is removed as the milled dispersion product.

An apparatus and continuous process for making milled solid in liquid dispersions comprises several steps: 1) Forming a pre-mill mixture of pre-mix, milling media, and previously milled dispersion. 2) Milling the pre-mill mixture to form a milled mixture of milling media and milled dispersion. 3) Separating a portion of the milled dispersion, which is substantially free of milling media, from the milled mixture. 4) Recycling the un-separated mixture by adding additional pre-mix to form the pre-mill mixture to create a continuous milling process. The pre-mix comprises a liquid and a solid. The process is a continuous process and the milling media is recycled through the milling step. Much of the milled dispersion is also cycled through the milling step several times and only a portion of the milled dispersion, which is substantially free of milling media, is removed as the milled dispersion product.

Existing methods of extrusion and other techniques to compound host and additives material uniformly disperse the additive in the host. This innovation uses ball milling to a coat a host particle with an additive dramatically reducing the additive required to achieve a percolative network in the host.

Existing methods of extrusion and other techniques to compound host and additives material uniformly disperse the additive in the host. This innovation uses ball milling to a coat a host particle with an additive dramatically reducing the additive required to achieve a percolative network in the host.

A method of producing Aluminum Nitride comprising milling nuts into a powder, milling a powder of nanocrystalline Al.sub.2O.sub.3, mixing, pressing into a pellet, providing nitrogen, heating, and forming AlN. An Aluminum Nitride product from preparing powders of nuts and Al.sub.2O.sub.3, mixing, and forming a powder, pressurizing into a disk, pyrolizing in nitrogen, and forming AlN in a pure form and in the wurtzite phase. An Aluminum Nitride (AlN) from preparing powders of agricultural nuts, preparing powders of nanocrystalline Al.sub.2O.sub.3, mixing the powders and thereby forming a homogenous sample powder of agricultural nuts and Al.sub.2O.sub.3, pressurizing the homogenous sample powder into a disk, heat treating or pyrolizing the disk in a nitrogen atmosphere, reacting the disk and the nitrogen atmosphere and forming AlN, and wherein the AlN is nano-structured AlN and in a pure form and in the wurtzite phase of AlN.