The present invention provides a system for a vertical roller grinding blade and a grinder including the same, the blade including an outer blade having a hollow space formed therein; and an inner blade which can be installed to be rotated by a rotating shaft in the hollow space of the outer blade and includes at least two eccentric rollers installed to each other such that a center line and a rotation axis of each of the at least two eccentric rollers are misaligned and eccentric to each other, wherein the center lines of the at least two eccentric rollers are misaligned and eccentric to each other.

A fertilizer grinding mechanism, a water and fertilizer mixing device, and an aqueous fertilizer solution preparation production line. A fertilizer receiving body, where an edge is provided with a arranged first channel; a connecting body, fixed to a bottom of the fertilizer receiving body and provided with a second channel with the first channel, a bottom of the second channel is communicated with a buffer bin, a pushing block is arranged in the buffer bin, and the pushing block is connected with a drive mechanism for driving the block to move in direction of the body; and an inner grinding block, where the block is fixed to a bottom of the connecting body, an outer side of the inner grinding block is with a vertically movable grinding roller, the pushing block can push fertilizer under vertical movement of the roller. The grinding mechanism has a heat dissipation effect.

A gyratory roller crusher in which the rollers have a corrugated profile and at least one of the rollers is eccentrically mounted to give a relative gyratory motion to the rollers resulting in additional breakage mechanisms for the comminution of a very wide range of feed material, vastly improved crushing ratios and increased throughput compared with conventional roller crushers.

A gyratory roller crusher in which the rollers have a corrugated profile and at least one of the rollers is eccentrically mounted to give a relative gyratory motion to the rollers resulting in additional breakage mechanisms for the comminution of a very wide range of feed material, vastly improved crushing ratios and increased throughput compared with conventional roller crushers.

The invention relates to a process for the wet milling of slag, wherein more than 100 kWh of milling energy are introduced per metric ton of slag and the weight ratio of slag to water is 0.05-4:1 and from 0.005 to 2% by weight, based on the slag, of a milling auxiliary which comprises at least one compound selected from the group consisting of polycarboxylate ether, phosphated polycondensation product, lignosulfonate, melamine-formaldehyde sulfonate, naphthalene-formaldehyde sulfonate, monoglycols, diglycols, triglycols and polyglycols, polyalcohols, alkanolamine, amino acids, sugar, molasses and curing accelerators based on calcium silicate hydrate is added to the material being milled before or during the milling.

The invention relates to a process for the wet milling of slag, wherein more than 100 kWh of milling energy are introduced per metric ton of slag and the weight ratio of slag to water is 0.05-4:1 and from 0.005 to 2% by weight, based on the slag, of a milling auxiliary which comprises at least one compound selected from the group consisting of polycarboxylate ether, phosphated polycondensation product, lignosulfonate, melamine-formaldehyde sulfonate, naphthalene-formaldehyde sulfonate, monoglycols, diglycols, triglycols and polyglycols, polyalcohols, alkanolamine, amino acids, sugar, molasses and curing accelerators based on calcium silicate hydrate is added to the material being milled before or during the milling.

A mill is formed by a plastic rotating part, a high-hardness rotating part, a high-hardness stationary gear, and a plastic stationary part, such that the high-hardness rotating part and the high-hardness stationary gear are provided with a plurality of teeth complementary to one another for the grinding function. The high-hardness gear and the plastic stationary part advantageously have locking means enabling an automatic assembly of the mill, since the mentioned elements are able to easily rest relative to one another in the suitable position and fit together effortlessly.

A mill is formed by a plastic rotating part, a high-hardness rotating part, a high-hardness stationary gear, and a plastic stationary part, such that the high-hardness rotating part and the high-hardness stationary gear are provided with a plurality of teeth complementary to one another for the grinding function. The high-hardness gear and the plastic stationary part advantageously have locking means enabling an automatic assembly of the mill, since the mentioned elements are able to easily rest relative to one another in the suitable position and fit together effortlessly.

A locking system in an industrial machine is provided. The locking system includes a lock-ring positioned in a lock-ring recess in a rotational shaft, a spacing plate axially interfacing with the lock-ring, and a compression plate with a threaded opening. The locking system further includes a bolt threadingly engaged with the threaded opening in the compression plate and a spring axially interposed between the spacing plate and the compression plate.

The present invention provides a vertical roller-type grinding blade and a grinder including the same, the blade comprising: an outer blade having a hollow space formed therein; and an inner blade which can be installed to be rotated by a rotating shaft in the hollow space of the outer blade and includes at least two eccentric rollers installed to each other such that a center line and a rotation axis of each roller are misaligned and eccentric to each other, wherein the center lines of the eccentric rollers are misaligned and eccentric to each other.