Flexible plant concept boosts mineral deposit yield and assures quality

When encountering difficult mineral deposit conditions, comprehensive raw material studies and a plant design to suit the material’s characteristics really pay off. The investment and operating costs for the main equipment for manufacturing cement can be minimized in this way. Preliminary scalping before the primary crusher for controlling the quality is taken into consideration when fine grain content is qualitively distinguishable. A separate homogenization and material return to the main process allows the mineral deposit to be fully exploited. At the same time it allows overlapping quality and quantity fluctuations to be effectively balanced out.

1. Introduction
HeidelbergCement extracts worldwide approximately half a billion t of raw material annually for the production of building materials. Of this approximately 120 million t are used for the production of raw crushed stone for cement production. The starting materials such as chalk, limestone, clay, various types of karstified limestone, shell limestone, coral limestone and others originate from a variety of natural deposits. In addition there are also a wide variety of clays or other chemically similar minerals and diverse corrective components. Clearly there is a need to use...

Related articles:

Issue 11/2016

Equipment concept

Optimizing the production of crushed sand for dry-mix mortar industry

1 Introduction “Mortar” is a building material that can be described as a mix consisting of a binder (e.g. cement, lime), mineral aggregate with a maximum particle size d = 4.0 mm, and any...

Issue 07-08/2009 Focus Industry

Screening system for flexible adaption

In addition to the trend for ever higher capacities, there is a growing demand in the non-metallic minerals for screening products to well below 100 µm, so as to eliminate the need for...

Issue 04/2018

Optimum use of screens

W?ith the use of a classifying screen, the efficiency of the ?crushing and screening process in natural stone and recycling applications can be improved. To obtain a high-quality end-product, it is...

Issue 07-08/2017

16th Raw Material Colloquium in Schönebeck


W?ith Industry 4.0, mineral planning in Saxony-Anhalt, protection of species and the so-called “Mantelverordnung”, the Raw Material Colloquium of the Employers’ Association of the Mineral Building...

Issue 09/2010

Sandvik SR roller screen in lime processing plant

In 2008 planning commenced for the new lime processing and calcining plant at the Saal site operated by the company Fels-Werke. The plant is designed for a running time and operating lifetime of 40...