US 2016/0272539 A1

System for the production of fine lime

(22) 27.11.2013

(43) 22.09.2016

(57) The present invention is directed to a method of continuously calcining a limestone particle mix comprising a fine fraction of limestone particles and a coarser fraction of limestone particles. The limestone particles heat treated in a flash calciner in which the mixture is entrained and heated in process gas for an amount of time sufficient to fully calcine the fine fraction but not the coarser fraction. The process gas is separated from the heated limestone mixture. The mixture is directed to a retention vessel in which the mixture is retained for an amount of time sufficient to fully calcine the coarser fraction utilizing the process heat present in the limestone mixture. No external heat needs to be added to the retention vessel during the retention step to promote calcination.

(71) Michael Prokesch, Coopersburg, PA (US); FLSmidth A/S, Valby (DK)


Related articles:

Issue 5/2015 WO 2015/028115 A1

Process and apparatus for production of lime products and pozzolan

(22) 31.07.2014 (43) 05.03.2015 (57) The process of the invention for production of lime products and pozzolan is characterized in that a. cement raw meal is heat-treated in a suspension-type heat...

Issue 9/2020 SK1922019 (U1)

Method of heating a cement kiln/lime kiln and high heat consumption devices

(22) 17.05.2019 (43) 04.05.2020 (57) Cement kiln/lime kiln and high heat consumption devices are continuously heated by burning at least hot steam gas mixture from tire pyrolysis such way that: the...


Quality assurance of crushed limestone intended for use in plaster mix applications

1 Introduction Shfeya lime, located in northern Israel, is a producer of quicklime, hydrated lime and limestone-based aggregates. The raw material being mined in the plant quarry is of two main types:...

Issue 12/2011

Simulation of lime calcination in PFR kiln – Influence of energy input and lime throughput

This article presents a one-dimensional mathematical model to describe and simulate the lime calcination process in a parallel flow regenerative (PFR) lime shaft kiln. The model comprises ordinary...

Issue 02/2024

Proposal for a new kiln process for burning of lump lime

The current state-of-the-art Benchmark for any proposed new lime-burning process is the PFR kiln. This type of kiln achieves the lowest possible specific thermal-energy consumption. A whole series of...