摘要:
Provided is an apparatus for producing solid polymeric microparticles, the apparatus comprising a plurality of liquid droplet generators for forming liquid droplets of a first liquid, and a nozzle for forming a jet of a second liquid, wherein the plurality of liquid droplet generators and the nozzle are arranged relative to each other such that, in use, liquid droplets from the plurality of liquid droplet generators pass through a gas into said jet of second liquid. Also provided is a process for producing solid microparticles, the process comprising: providing a first liquid comprising a solute and a solvent, the solute comprising a biocompatible polymer, the concentration of polymer in the first liquid being at least 10% w/v, ‘w’ being the weight of the polymer and ‘v’ being the volume of the solvent, providing a plurality of liquid droplet generators operable to generate liquid droplets, providing a jet of a second liquid, causing the plurality of liquid droplet generators to form liquid droplets of the first liquid, passing the liquid droplets through a gas to contact the jet of the second liquid so as to cause the solvent to exit the droplets, thus forming solid microparticles, the solubility of the solvent in the second liquid being at least 5 g of solvent per 100 ml of second liquid, the solvent being substantially miscible with the second liquid.
摘要:
A process for preparing crystalline particles of an active principal in the presence of ultrasonic irradiation that comprises contacting a solution of a solute in a solvent in a first flowing stream with an anti-solvent in a second flowing stream causing the mixing thereof, wherein the flow rate ratio of the anti-solvent: solvent is higher than 20:1, and collecting crystals that are generated.
摘要:
A spherical tungsten carbide powder is characterized by that the material has a microhardness higher than 3600 kgf/mm 2 , and that the powder has an apparent density from 9.80 to 11.56 g/cm 3 . A method for the manufacture of a powder comprises the steps: a) providing a chamber comprising a rotatable crucible, b) adding material into said rotatable crucible, c) melting the material using a plasma arc discharge, d) rotating the crucible to atomize the molten material to form liquid droplets, with subsequent cooling of the droplets to obtain a powder, wherein the material added into said rotatable crucible is heated to a temperature above 40% of the melting temperature of the material before it enters the crucible. It is possible to reduce the current required for melting the stock. Heat losses are decreased, and the spherical powder obtained during atomization becomes more homogeneous in its composition and structure. The cost is reduced.
摘要翻译:球形碳化钨粉末的特征在于该材料具有高于3600kgf / mm 2的显微硬度,并且该粉末的表观密度为9.80至11.56g / cm 3。 一种用于制造粉末的方法包括以下步骤:a)提供包括可旋转坩埚的腔室,b)将材料添加到所述可旋转坩埚中,c)使用等离子体电弧放电来熔化材料,d)旋转坩埚以雾化 熔化的材料以形成液滴,随后冷却液滴以获得粉末,其中添加到所述可旋转坩埚中的材料在其进入坩埚之前被加热到材料的熔化温度的40%以上的温度。 可以减少熔化原料所需的电流。 热损失降低,雾化时得到的球状粉末的组成和结构变得更均匀。 成本降低。
摘要:
A production method for animal excrement treatment material and a production device therefor, having: a step in which a raw material is granulized and a granular material (1102) is obtained; and a step in which a coating material is coated on the granular material (1102). The step in which the coating material is coated on the granular material (1102) has: a step in which the coating material is arranged on the granular material (1102); and a step in which a vibration is applied to the granular material (1102) having the coating material arranged thereupon.
摘要:
Apparatus for prilling a liquid, comprising a distributor for supplying said liquid, at least one dispenser, and a pulse generator, wherein said pulse generator: is situated in either one of said supply distributor and said dispenser; is passed through by at least a portion of said liquid; and comprises at least a first surface and a second surface, which face each other and perform a relative movement and comprise respective passages for the liquid; and wherein said first surface and second surface, which are passed through by the liquid, generate in the liquid periodic pulses of pressure having a predetermined frequency dependent on the relative speed of said two surfaces.
摘要:
The present application is directed towards systems for adding components to materials being fluidized in a vibratory mixer by use of atomizers or sprayers. A mechanical system can fluidizes, mix, coat, dry, combine, or segregate materials. The system may comprise a vibratory mixer, mixing vessel containing a first material and a sprayer to introduce a second material. The vibratory mixer may generate a fluidized bed of a first material and the sprayer, coupled to the mixing vessel, may introduce a second material onto the fluidized bed to mix the materials in a uniform and even fashion.