Method for continuously controlling the particle size distribution of powders used in the ceramics industry, and plant for its implementation

A technology of particle size distribution and milling equipment, applied in particle size analysis, particle and sedimentation analysis, measuring devices, etc., can solve problems such as errors, statistical uncertainties, and high costs

Inactive Publication Date: 2006-11-15
SACMI COOP MECCANICI IMOLA S C R L
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] These operations can result in a high rate of human error with consequent statistical uncertainty in obtaining data, slow measurement speeds and delays in adjusting milling final high cost

Method used

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  • Method for continuously controlling the particle size distribution of powders used in the ceramics industry, and plant for its implementation
  • Method for continuously controlling the particle size distribution of powders used in the ceramics industry, and plant for its implementation
  • Method for continuously controlling the particle size distribution of powders used in the ceramics industry, and plant for its implementation

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Embodiment Construction

[0035] Said figure shows a device 1 for continuously controlling the particle size distribution of powder 2 produced by a suitable system 3.

[0036] The system 3 basically includes a known atomizer 30, and the slurry to be processed is sprayed into the aforementioned atomizer 30 from a nozzle connected to a feed pump 32.

[0037] Based on the particle size distribution value of the powder 2 measured by the device 1 at the outlet of the atomizer 30, the pressure of the slurry delivered by the feed pump 32 is operated and controlled by the processor 33 and via a suitable adjustment mechanism.

[0038] When the slurry has been processed, the atomizer 30 discharges the powder 2 onto the first conveyor belt 34, which then deposits the powder 2 on the second belt 35 located below, which is arranged as The powder is transferred to a storage area not shown.

[0039] It can be seen from the figure that the device 1 for controlling powder particle size distribution includes a frame 4, and ...

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Abstract

Method for continuously controlling the particle size distribution of ceramic powders leaving the powder forming plant, comprising at least the following steps: withdrawing at least one powder sample at predetermined intervals; measuring the particle size distribution of the withdrawn sample; comparing the measured particle size distribution with a reference particle size distribution by means of a processor; regulating at least one parameter of said powder forming plant influencing the particle size distribution, on the basis of the differences between the measured particle size distribution and the reference particle size distribution; and plant for its implementation.

Description

Technical field [0001] The present invention relates to equipment and related methods for controlling and determining the particle size distribution of powders used in the ceramic industry. The above-mentioned powders are especially ceramic powders obtained by spray drying or atomization methods, also known as atomized powders, or by Dry the powder obtained by grinding. Background technique [0002] The equipment that produces this atomized powder is usually called an atomizer. [0003] It is known to use methods such as screening, laser diffraction, ultrasonic acoustic spectroscopy, and microscopic analysis to determine powder particle size distribution. [0004] A fast execution method with good accuracy and low cost is based on processing images obtained by a suitable video camera or camera or known optometric mechanism; this method is called CAIA (Computer Aided Image Analysis). [0005] Known methods make it possible to analyze the particle size distribution (in weight or vo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/02
Inventor F·丰塔纳D·福斯基P·里沃拉S·瓦利B·扎乌利E·P·托马西尼G·M·雷韦尔N·保内F·拉加齐尼
Owner SACMI COOP MECCANICI IMOLA S C R L
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