Ozonized petrochemical products used to intensify coal flotation

Further Investigations on Simultaneous Ultrasonic Coal Flotation

This study investigates the flotation performance of a representative hard coal slime sample (d80 particle size of minus 0.2 mm) obtained from the Prosper-Haniel coal preparation plant located in Bottrop, Germany. Flotation was carried out with a newly designed flotation cell refurbished from an old ultrasonic cleaning bath (2.5 L volume) equipped with a single frequency (35 kHz) and two differ...

A review of simultaneous ultrasound-assisted coal flotation

Ultrasound can be used both simultaneously or as a pretreatment technique for flotation to produce higher combustible recoveries, higher heat values, and lower ash data from raw hard coals. The recent research works have indicated that modifying coal surfaces, especially physical surface cleaning with the help of the cavitation process created by power ultrasound at certain frequency and time i...

Processing of Alborz Markazi coal tailings using column flotation

Investigations were carried out on coal tailings by conventional cell and column flotation techniques. Tests were conducted to assess processing coal tailings of Alborz Markazi coal washing plant in Iran by column flotation. The effects of reagent type/dosage were investigated with conventional flotation and their results were used in the performance of column flotation. Also the effects of the...

Coal Combustion and Combustion Products

Modeling and forecasting demand for petrochemical products of Persian Gulf Petrochemical Industries Company (PGPIC)

This article models and forecasts the domestic and exports demand  of products of Persian Gulf Petrochemical Industries Company (PGPIC) using a dynamic panel data model. The model is estimated using GMM method and domestic and export price index, the quantity demanded ​​of the company's products, the global price index of alternative products and the income of demandant companies for the PGPIC'...