78results about How to "Strong wrapping" patented technology

The invention relates to a method for preparing ferric hydroxide-based raw materials containing high value elements, belonging to the technical field of resource recycling and wet metallurgy. The preparation method comprises the following steps: burdening, reacting and drying iron-based wastes, thereby preparing the ferric hydroxide-based raw materials containing high value elements comprising hydroxides of iron, high value element compounds and combustible organic matters, wherein the iron and high value elements mainly refer to hydroxides. The product prepared by the invention is powder or breakable agglomerate, is not subjected to spontaneous combustion at the temperature of less than or equal to 200 DEG C, and has the advantages of texture uniformity, difficulty in spontaneous combustion, convenience in use, safety, low consumption of chemical raw materials, high value element dissolution rate and the like. The fire risk of iron-based wastes in the transport, loading and unloading, storage and production processes is eliminated. The preparation method and equipment are simple, easy control is realized, the reaction heat is fully utilized, the reaction speed is high, the security and stability are high, the treatment capacity is high, the production cost is low, the consumption of power, manual labor and energy is greatly saved, and the method is suitable for industrial production.

The present invention relates to a shell nitrogen-fixing slowly-released composite fertilizer. It is characterized by that its composition includes the following components: (by wt%) 5-10% of organic diatomite, 6-10% of calcium sulfate, 6-10% of general calcium perphosphate, 23-35% of monoammonium phosphate, 10-20% of potassium chloride and 23-33% of urea.

An apparatus for producing wrapped bales comprises first and second wrapping material dispenser means for dispensing wrapping material on the bales. It also comprises a wrapping means for circulating the first and second wrapping material dispenser means in a first plane of rotation around said bale for wrapping said web of wrapping material around said bale. The apparatus is further configured to emerge the first wrapping material from the first wrapping material dispenser means and the second wrapping material from the second wrapping material dispenser means around the bale at least in two different areas so that the properties of the final wrapping of at least one of said first and / or second wrapping material provided onto the bale differs substantially at least in the second area from the properties of the final wrapping of at least one of said first and / or second wrapping material in said first area in order to make the bale wrapping stronger in said second area.”

The invention provides a shield pipeline guide device. The device comprises a plurality of sets of guide carrier rollers, the guide carrier rollers are movably installed on an installation frame in parallel, the installation frame comprises a base, a rotating mechanism is movably arranged on the base, a first limiting mechanism is movably installed on the rotating mechanism, and the rotating mechanism and the first limiting mechanism are connected with the guide carrier rollers through a second limiting mechanism. According to the device, the guide carrier rollers are installed on the installation frame, so that when a bottom plate rotates, the guide device can deflect in the driving direction of a hose under the condition of not moving the base, and self-adaptive guide is achieved; and meanwhile, arc-shaped supporting plates can limit the guide carrier rollers to move up and down, so that the guide carrier rollers are not prone to getting stuck in the using process.