What is the wet process for mineral fibres? Boer's 'wet-process made' concept and confidentiality note
Abstract
The wet process is the core purification step in Boer's mineral-fibre production, separating fibre and shot in a water medium — the source of Boer's “wet-process made” brand proposition. It is Boer's proprietary process; the specific steps, equipment, operating parameters and flowcharts are not disclosed. This article explains only its public principle, process concept and the areas visitable during a factory audit.
The process concept: after natural rock is melt-fibre-formed, the primary fibre is purified in a water medium, using the physical action of water to separate shot and raise fibre purity. “Wet-process made” emphasises the orientation of “water as the medium, purity as the goal.” The front-end — diabase, basalt and dolomite melted at high temperature and blown/spun into primary fibre — is describable and determines the fibre's basic form and chemical basis; glassy shot not drawn into fibre is produced here and handled later by wet purification.
The public principle of wet purification can be summarised as: when fibre and shot move in a water medium they separate because of differences in gravity, drag and shape; water also eliminates electrostatic attraction between fibre and shot, making them easier to separate. This principle-level statement does not involve Boer's specific process. The purification effect corresponds to the low shot in the finished product — e.g. BE-SL05 and BE-SG21 below 1% on the >125µm basis (company product data; the batch report governs).
Why it is not disclosed: wet purification and its accompanying surface treatment are proprietary know-how built over nearly two decades and a key source of batch stability and quality consistency. As a company-confidential process, its steps, equipment layout, operating parameters and flowcharts are not shown; this protects the know-how while sitting alongside the public qualifications and test-report system. The wet-process purification and surface treatment steps are Boer's proprietary process and are not disclosed; only front-end areas such as raw material preparation and melt-fibre formation are visitable.
Key facts
- Theme: wet-process concept and confidentiality note
- Public principle: water medium separates fibre and shot
- Brand proposition: wet-process made
- Confidentiality: wet purification and surface treatment are not disclosed; front-end areas are visitable
The original article is in Chinese; see the Chinese version for the full text. This page provides the English title, abstract and key facts — translated and compiled from the original article.