Rheinkalk Gmbh

Christopher Pust

Arnd Pickbrenner

Wolfgang Rückert

Matthias Blöser

Denise Alfenas Moreira

Martin Sindram

Theodor Günther

Marion Lorgouilloux

Marc Pelletier

Günter Scholz

Wolfgang Rabe

Wolfgang König

Heiko Saure

Volker Spicker

Helma Honig

Matthias Rohmann

Theo GÜNTHER

The invention relates to a method for increasing the absorbency of a material containing alkaline-earth carbonate and alkaline-earth hydroxide with regard to sulfur oxides and/or other pollutants, in particular in flue gas, wherein the material containing alkaline-earth carbonate and alkaline-earth hydroxide is activated by heating said material to approximately 250&#xb0; C. to approximately 750&#xb0; C. for a time period of 1 minute to 12 hours.

Activation of a material containing alkaline-earth metal carbonate and alkaline-earth metal hydroxide for the dry scrubbing of flue gas

The invention relates to a process for production of biogas from a biodegradable substrate under anaerobic conditions, comprising the steps of introducing the substrate into a reaction space, the addition of a lime-based material having a particle diameter (d) of less than 90 &#x3bc;m and/or (d) of less than 10 &#x3bc;m to the substrate, and the biodegradation of the substrate to form biogas.

Process for production of biogas

The invention relates to a method for producing an agglomerate, which is used as a blast furnace feed material, by mixing a fine material containing metal and/or metal oxide, a mineral binder, which comprises a mineral raw material and a lime-based material, and optionally other additives to form a mass and solidifying the mass to form an agglomerate, wherein a raw material comprising a silicon oxide fraction of at least 40 wt %, a fine grain fraction of less than 4 &#x3bc;m of at least 20 wt %, and a grain size fraction of less than 1 &#x3bc;m of at least 10 wt % is used as the mineral raw material. The invention further relates to a blast furnace feed material that can be produced by means of the method according to the invention, and to a pre-mixture for producing the blast furnace feed material.

Method for producing an agglomerate made of fine material containing metal oxide for use as a blast furnace feed material

The invention relates to a method of raising the pH of a body of water having a pH of less than 4.5 by introducing neutralizing agent, the raising of the pH taking place in at least two stages thus: at pH levels below 4.5, a first neutralizing agent having a final conductivity of not more than 100 &#x3bc;S/cm, and, after attainment of a pH of at least 4.5, a second neutralizing agent, having a final conductivity of more than 100 &#x3bc;S/cm, is introduced into the body of water, the final conductivity of the neutralizing agents being defined as the conductivity of an aqueous suspension or solution of neutralizing agent in solution equilibrium at 25&#xb0; C., having a neutralizing agent content of 0.015% by weight.

Method of raising the pH of acidic bodies of water

Growing community of inventors

Düsseldorf, Germany

Christopher Pust