Xuzhou Heavy Machinery Co., Ltd.

Eve Rubber Institute Co., Ltd.

Versalis S.p.a.

Eve Rubber Institute Co., Ltc

Jianjun Song

Li Li

Honggang Ding

Deying Dai

Mengjiao Wang

Zenghai Shan

Claudio Cavallo

Yunwang Ma

Lei Zhu

Fei Ma

Housheng Wang

Haibing Ji

Gabriele Gatti

Jing Jiang

Hao Shu

Jiye Wang

Meng-Jiao Wang

Process for the purification of the solvent deriving from the production of an elastomeric blend comprising the following steps: (a) optionally, subjecting said solvent to a pre-washing () in the presence of at least one acid or basic aqueous solution; (b) feeding said solvent to a liquid-liquid separation column (); (c) feeding the stream leaving the head of said liquid-liquid separation column () to an azeotropic distillation column (); (d) feeding the stream withdrawn laterally (side-withdrawal) from said azeotropic distillation column () to an adsorption section (); Said process allows to obtain a polymer grade solvent having a quality suitable for being used indifferently and contemporaneously in various types of production plants of elastomeric (co)polymers, i.e. in plants wherein an anionic (co)polymerization is carried out, and also in plants wherein a Ziegler-Natta (co)polymerization is carried out.

Process for the purification of the solvent deriving from the production of elastomeric blends

A wheeled crane and self-demounting and self-mounting methods for supporting legs thereof is disclosed. The wheeled crane includes a vehicle frame and auxiliary supports, and the auxiliary supports can enable the vehicle frame to keep balance. Since the wheeled crane has auxiliary supports, when the supporting legs are demounted or mounted, the auxiliary supports function as supporting legs, so that the supporting legs can be mounted and demounted by the operation part of the wheeled crane with no need of using an auxiliary crane, and thus the self-mounting and self-demounting of the supporting legs of the wheeled crane are realized.

Wheeled crane and self-demounting and self-mounting methods for supporting legs thereof

The present invention relates to a continuous manufacturing process for a rubber masterbatch and a rubber masterbatch prepared therefrom. The manufacturing process comprises the following steps: step 1): a filler is added to a rubber solution, forming a rubber/filler/solvent mixture by stirring; and step 2): the solvent is removed and the mixture is dried, resulting in a rubber/filler masterbatch. The present invention also relates to a masterbatch prepared by the above-mentioned process and a rubber article prepared using the masterbatch. Compared to the wet mixing technologies in the prior art, the present invention has no specific requirements of rubber and filler, with a wider scope of usage. In addition, the filler has a high dispersion in rubber compounds, the production process thereof is continuous, highly efficient, low in energy consumption and labour, and thus low in cost.

Continuous manufacturing process for rubber masterbatch and rubber masterbatch prepared therefrom

An independent suspension system includes two suspension oil cylinders, respectively arranged between wheels at two sides and a frame: and a steering mechanism, configured to be driven by a steering booster oil cylinder to drive the wheels at two sides to turn. The independent system also includes two swing links arranged corresponding to the wheels at two sides, an end at one side of each of the swing links is hinged to a wheel hub of the wheel at the corresponding side via a spherical hinge, and an end at another side of each of the swing links is hinged to a fixing member fixed below a main speed reducer via two spherical hinges respectively along a fore-and-aft direction. A crane having the independent suspension system is further provided.

Independent suspension system and crane having same

Disclosed are a continuous manufacturing process for a rubber masterbatch and a rubber masterbatch prepared therefrom. The manufacturing process comprises: 1): a filler is added to a rubber solution, forming a rubber/filler/solvent mixture by stirring; 2): the rubber/filler/solvent mixture obtained in step 1) is fed into a coagulator, and is coagulated after optionally being brought into contact and mixed with one or more fluids of nitrogen, steam, water, aqueous slurry of filler, and oil in the coagulator, resulting in a mixture of a rubber/filler composite and a solvent; 3): the mixture obtained in step 2) is directly passed into a heating medium at a temperature higher than the boiling point of the solvent, the polarity of the medium being different from that of the solvent used, the mixture is coagulated and deswelled, and the solvent is evaporated rapidly, thereby forming a mixture of a rubber/filler composite and the solvent containing the heating medium; and 4): the solvent is removed and the remaining mixture is dried, resulting in a rubber/filler masterbatch.

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Shandong, China

Jianjun Song