Abstract: To reduce a stop time of transportation of wafers which occurs when one stepper handles many kinds of products, before exposure of semiconductor wafers of a first cassette port 7a is completed, a process recipe for semiconductor wafers of a second cassette port 7b is obtained from a host computer 2, the progress of the exposure of the semiconductor wafers of the first cassette port 7a is detected via a sequencer 5, it is determined, based on the obtained process recipe, whether or not the semiconductor wafers of the second cassette port 7b can be transported to an exposure stage following the last semiconductor wafer of the first cassette port 7a, and a stepper 1 is caused to perform exposure in accordance with the determination result and the progress detection result.

Abstract: To reduce a stop time of transportation of wafers which occurs when one stepper handles many kinds of products, before exposure of semiconductor wafers of a first cassette port 7a is completed, a process recipe for semiconductor wafers of a second cassette port 7b is obtained from a host computer 2, the progress of the exposure of the semiconductor wafers of the first cassette port 7a is detected via a sequencer 5, it is determined, based on the obtained process recipe, whether or not the semiconductor wafers of the second cassette port 7b can be transported to an exposure stage following the last semiconductor wafer of the first cassette port 7a, and a stepper 1 is caused to perform exposure in accordance with the determination result and the progress detection result.

Abstract: An imidazoline derivative or possible tautomer thereof, represented by the formula (1), wherein n represents one of integers "1" through "4", and R.sub.1 and R.sub.2 represent hydrogen atom, lower alkyl, aryl, aralkyl group, or R.sub.1 and R.sub.2 cooperate to represent alkylene, alkylidene or arylalkylidene group, while R.sub.3 represents a nitrogen-containing aromatic ring that may be substituted by lower alkyl, alkoxy or alkanoyl group, or a substituted phenyl group represented by the formula (2), wherein R.sub.4 and R.sub.5 represent hydrogen atom, lower alkyl group that may be substituted by halogen atom or hydroxyl group, cycloalkylalkyl group, lower alkenyl group, lower alkanoyl group that may be substituted by halogen atom, lower alkoxyalkyl or alkoxycarbonyl group, arylcarbonyl, arylalkyl or arylalkoxycarbonyl group, lower alkylaminocarbonyl or alkylsulfonyl group or arylsulfonyl group, or R.sub.4 and R.sub.5 cooperate with an adjacent nitrogen atom to constitute a cyclic structure, while R.sub.

Abstract: An imidazole derivative represented by one of formulas (1), wherein R.sub.1, R.sub.2 represents hydrogen atom, lower alkyl, aryl, aralkyl group, or R.sub.1 and R.sub.2 cooperate to represent alkylene, alkylidene, arylalkylidene group, R.sub.3 representing hydrogen atom, lower alkyl or alkanoyl group, or aralkyl or arylcarbonyl group, wherein at least one of A and B represents a group represented by formula (2), wherein m represents an integer 1-4, R.sub.4 representing nitrogen-containing aromatic ring that may be substituted by lower alkyl, alkoxy or alkanoyl group, or phenyl group represented by formula (3), R.sub.5, R.sub.6 representing hydrogen atom, lower alkyl or alkenyl group, or lower alkanoyl or arylcarbonyl group which may be substituted by a halogen atom, R.sub.

Abstract: A control method for crushing massive furnace slag using a swingable type crushing apparatus in which a crushing clearance is increased or decreased in a stepwise manner by a hydraulic mechanism depending on crushing conditions of the massive furnace slag, which may be blast furnace slag, convertor slag, and electric furnace slag. A hydraulic pressure of a hydraulic mechanism is detected as a variable of the crushing conditions and is compared with a set value so as to adjust the crushing clearance.

Abstract: An operational control method for a cylindrical crusher in which furnace slag is supplied to the cylindrical crusher through supply means and said furnace slag is crushed to obtain a furnace slag product, wherein particle size distribution and iron content ratio of a furnace slag product are detected and variable control of a supplying amount from the supply means and/or revolution speed of a cylindrical crusher is carried out within a predetermined range.

Abstract: A slag disposal method for disposing of slags produced in furnaces during iron or steel making processes comprises employing the steps of magnetic sorting of masses of crude slags of a size greater than a value ranging between 300 to 500 mm obtained from the furnaces into slags rich in iron (above about 50 to 60 percent) and slags not rich in iron (below about 50 to 60 percent) and then applying a compressive force to the slags rich in iron to cause a coarse crushing and/or deformation to reduce the size and at the same time increase the iron content due to the breaking and separation of the slags from the metal. Further magnetic sorting and sieving after griding are provided to obtain concentrates having high iron content and to improve recovery efficiency.

Abstract: A shell structure of a heavy-load type rod mill including a barrel having an outlet port and with a plate thickness of t.sub.1, and a pair of trunnions having journals integrally formed thereon and with a plate thickness of t.sub.2, which trunnions are welded to the barrel. At the weld joining the barrel and the trunnion, the relationship between the plate thickness t.sub.1 of the barrel and the plate thickness t.sub.2 of the trunnion is t.sub.1 .ltoreq.t.sub.2 .ltoreq.2t.sub.1.

Abstract: A liner for the outlet port of a rod mill including a cylindrical body provided on the peripheral edge of an opening of the liner and projecting outwardly through the outlet port to prevent a rod from exiting the liner. The projecting length of the cylindrical body on the side close to the end portion of the barrel of the rod mill is preferably longer than that on the opposite side.

Abstract: A slag breaker for breaking slags from furnaces has a stationary breaker plate and a rocking breaker plate defining therebetween a breaking chamber and provided on the opposing surfaces thereof with undulations. The size of the outlet of the breaking chamber is about 1/5 to 2/5 of that of the inlet of the breaking chamber. The size of the outlet of the breaking chamber is internationally changed cyclically and incrementally, by the operation of a hydraulic mechanism which is equipped with a specific dust proof means.

Abstract: The apparatus comprises a milling machine including a heated rotatable drum connected to means for supplying coarsely crushed coal and preheated oil to the drum wherein the coal becomes finely ground and homogeneously mixed with the oil, and having a discharge duct rotatably connected to the drum and slidably connected to a stationary discharge tower in which the coal/oil slurry is separated from water evaporated from the coal during milling.