摘要:
The invention consists in a method and apparatus wherein a non-cap sensitive water-in-oil emulsion explosive base is injected successively into shells through a nozzle into which a chemical gassing solution is simultaneously fed.The gassing solution is mixed with the base in the nozzle so that the mixture issuing from the nozzle into the shell is a cap-sensitive water-in-oil emulsion explosive.Advantageously the gassing solution is supplied from a pressurisable vessel which may be pressurised intermittently to inject solution into the nozzle in synchronization with the injection of predetermined quantities of emulsion base through the nozzle. The invention effects accurate gassing of explosive emulsion immediately prior to filling the shells so that the amount of sensitised explosive within the apparatus is kept to a minimum.
摘要:
A laminator or embosser has heating means 16 for heating a thermoplastic web 12.2, 12.3 before it enters the laminator or embosser nip 18. While the web is being heated it is supported or guided by means of a cooled contacting surface formed by cooled tubes 30 or a support plate with cooled ridges 50.1, 50.2 over which the web slidably moves. The area of contact between the web and the contacting surface is substantially less than the area of the web being heated, and the contacting surface is maintained at a temperature below that at which the web will commence to stick to the surface.
摘要:
An explosive which includes an explosive emulsion comprising a discontinuous phase which includes an oxidising salt and a continuous phase which includes a fuel and which is immiscible with the discontinuous phase; ammonium nitrate prills; and a water-resisting agent for inhibiting deterioration of the ammonium nitrate prills in the presence of water, which agent has the effect of inhibiting access of water to the ammonium nitrate prills. The water-resisting agent may comprise a member selected from the group consisting of petroleum sulphonates; guar gums in conjunction with cross-linking agents; alkyl phosphates; derivates of polyisobutylene succinic anhydride; and mixtures of two or more thereof.
摘要:
A wind-up mechanism 10 comprises a driven wind-up drum 12 having a perforated outer surface 24. A web 34 to be wound up passes around the drum onto a core 22 where it is wound up to form a reel. The core is freely rotatable on a turret 16. A cylinder 20 urges the reel against the drum 12 so that rotation of the drum causes rotation of the reel. The interior of the drum is divided by partitioning into a pressure chamber 28 connected to the delivery of a pump 32, and a suction chamber 30 connected to the suction of the pump. Suction tends to increase frictional adherence of the web to the drum in the region of the suction chamber 30, whereas pressure tends to assist separation of the web from the drum in the region of the pressure chamber 28. A new method of cutting the web and changing over from a completed reel to a new core is also disclosed. Furthermore, an embossing apparatus is disclosed in which a perforated drum such as the drum 12 is used to strip the web from the embosser roller by applying suction to the web to suck it away from the embosser roller.
摘要:
An apparatus for and a method of testing AC operable detonating modules (10) whereby an electric charge is discharged through a primary wire (20) threaded through or around a transformer core (14) of a module being tested and the voltage across, or the current through the primary wire is determined. Modules can be simply and reliably tested by means of a compact apparatus requiring a current of only about 1.4 mA.
摘要:
This application relates to synthetic fuels and to a method of running compression ignition engines into which the fuels are injected or inducted. The fuels comprise mixtures of (A) at least one alcohol with an average molecular weight of less than 160 and (B) at least one further organic compound having a spontaneous ignition temperature of less than 450°C. Suitable alcohols (component (A)) include methanol, ethanol, propa- nols, isopropanol, butanol. The further organic compound or compounds (component (B)) may be selected from a wide range of compounds including alcohols, ethers, aldehydes for example acetaldehyde, compounds containing one or more nitrate groups and one or more ether linkages for example 2-ethoxyethyl nitrate, and nitrogen-containing organic compounds including azo compounds, tetrazines, nitroso compounds, nitro compounds, certain nitrate compounds and hyponitrites.
摘要:
A method of making an article such as an article of sanitary ware from an acrylic material and a backing material, includes the steps of forming the acrylic material into a desired shape, applying to a side of the acrylic material a layer of a bonding material which bonds to the acrylic material and to the backing material at ambient temperatures but which caused delamination of the backing material from the acrylic material at elevated temperatures, and applying to the resulting product the backing material with the layer of the bonding material between the acrylic material and the backing material, so that the backing material adheres to the acrylic material to form the article. The article so formed may easily be subjected to a process of delamination so that the acrylic material may be recovered for recycling.
摘要:
A cell controller (1) comprises a plurality of processors (10), each of which has a number of interprocessor communication links (15). One or more of the processors (10) have interfaces (11) for connecting the processors (10) selectable data channels (13,14). A patch facility (4) enables any selected combination of interprocessor communication links (15) of the different processors (10) to be interconnected to form a multiprocessor network.
摘要:
A process 10 for producing calcium carbide includes operating a furnace 12 of the kind described by continuously feeding calcium oxide and carbon and/or carbon containing material as feed materials into the furnace chamber, subjecting the feed materials or solid burden in the chamber to a plasma torch generated between the plasma burner and the counter electrode, withdrawing calcium carbide intermittently or continuously by means of the calcium carbide withdrawal means, and withdrawing off gas continuously through the gas withdrawal means. Lime hydrate (Ca(OH) 2 ) material in agglomerated form passes through an elongate dryer 50, while the off gas passes through the dryer countercurrently to the lime hydrate material. The velocity of the gas is sufficient to entrain therein solid particles below a predetermined size and which are present in the lime hydrate material, thereby to pretreat the lime hydrate material by classifying it, and drying and calcining it to form calcium oxide (CaO) material.