News detail
Acid Proof Brick: High‑Performance Corrosion‑Resistant Refractory Brick for Industrial Lining
What Is Acid Proof Brick
Acid proof brick is a dense refractory brick formulated mainly with silica‑rich raw materials. During high‑temperature sintering, raw materials react and form compact crystal structure, which gives the product outstanding resistance against most inorganic acids, organic acids and partial weak alkali at room temperature.
It should be noted that standard acid proof brick shows limited performance against hydrofluoric acid and hot strong molten alkali. For projects involving HF or high‑temperature strong alkali medium, special customized material formulas shall be selected instead. This product focuses on chemical corrosion resistance rather than ultra‑high temperature resistance, making it the preferred lining material for acid‑contact facilities in chemical, metallurgy, power and fertilizer industries.
Core Features & Advantages
Superior Chemical Corrosion Resistance
High‑grade acid proof brick reaches acid resistance above 98%, stably resisting sulfuric acid, hydrochloric acid, nitric acid and various mixed acid erosion. When matched with qualified acid‑proof mortar, the whole masonry system forms complete anti‑corrosion barrier to avoid medium leakage and structure damage.
Low Water Absorption & Dense Structure
Well‑fired acid proof brick owns very low water absorption rate, normally controlled below 0.5%. Low porosity greatly restricts acid liquid permeating into brick interior, preventing internal erosion and brick body pulverization under long‑term corrosive environment.
High Mechanical Strength & Abrasion Resistance
High cold crushing strength enables acid proof brick to bear heavy mechanical load, impact and material abrasion. It can be applied for industrial flooring, tank bottom and trough areas with frequent mechanical friction, maintaining stable structure under comprehensive force of corrosion and physical wear.
Good Thermal Stability & Dimensional Accuracy
Qualified acid proof brick can withstand repeated temperature fluctuation without obvious cracking. Strict production control guarantees small dimensional tolerance, which helps smooth on‑site masonry construction and reduces gaps between bricks that become corrosion weak points.
Main Industrial Application Scenarios
Acid proof brick serves as lining material for facilities where acidic liquid or acid flue gas exists, covering multiple heavy‑industry fields.
Chemical & Fertilizer Industry
It is widely used for inner lining of absorption tower, drying tower, reaction tank, acid storage tank, acid‑leaking trench and anti‑corrosion pool in sulfuric acid, nitric acid and fertilizer production workshops. It protects concrete and metal base structure from long‑time acid medium corrosion.
Metallurgical Pickling Workshop
Pickling tanks, rinsing pools and workshop flooring for steel surface treatment adopt acid proof brick lining to resist erosion from pickling acid liquid, solving common early‑failure problem of ordinary building materials in pickling environment.
Power Plant Flue Gas Desulfurization System
Flue gas desulfurization absorption tower, flue duct and chimney inner lining suffer corrosive acid condensate. Acid proof brick effectively resists sulfur‑containing flue gas erosion, lowering overhaul frequency for power plant desulfurization equipment.
Wastewater Treatment & Electroplating Plant
Acid‑containing wastewater tank, reaction pit, drainage channel and electroplating workshop floor choose acid proof brick for anti‑corrosion purpose, coping with continuous impact of acidic waste water.
Typical Technical Specifications
Main chemical composition of acid proof brick features SiO₂ content ≥65%. Bulk density reaches 2.30‑2.40 g/cm³, water absorption ≤0.5%, acid resistance ≥98%. Cold crushing strength is normally above 50MPa.
Standard dimensions include 230×113×65mm, 230×113×40mm, 150×75×25mm. Special sizes, groove‑back bricks and non‑standard shapes can be customized according to project drawing requirements.
Installation Notes for Acid Proof Brick
The performance of acid‑proof lining system depends on both brick quality and masonry material. It must be matched with special acid‑resistant mortar rather than ordinary cement mortar. Construction surface shall be flat, clean and dry. Strictly control joint thickness and joint filling quality to avoid gaps becoming corrosion weak points.
Users shall confirm actual medium type, temperature and concentration before ordering. For working conditions containing hydrofluoric acid or hot strong alkali, inform supplier in advance for targeted material recommendation.
Why Choose Our Acid Proof Brick
We supply reliable acid proof brick for global industrial anti‑corrosion projects. Strict raw material screening and high‑temperature firing process guarantee stable batch‑to‑batch performance. We support standard stock products as well as custom shape and size according to customer drawings. Technical team can provide project‑oriented material selection suggestion. We offer samples for performance test before bulk order to reduce project risk. If you have technical questions or quotation demand for your anti‑corrosion lining project, please feel free to contact us.
Send inquiry
Please Leave your message you want to know! We will respond to your inquiry within 24 hours!