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Usually refers to calcium hydroxide (Ca(OH)₂), an inorganic compound widely used in various industries, especially in construction, chemical, and environmental protection fields.

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Details Introduction

Gray calcium, usually referring to calcium hydroxide (Ca(OH)₂), is an inorganic compound widely used in various industries, especially in construction, chemical, and environmental protection fields. The following is a detailed introduction to gray calcium, its product characteristics, and its applications and functions in brake pads.

Detailed introduction and product characteristics of gray calcium: sources and preparation.

Gray calcium is mainly produced by calcining limestone (which is primarily composed of calcium carbonate, CaCO₃) to obtain quicklime (CaO), which then reacts with water to form calcium hydroxide. This process is known as 'digestion' or 'slaking,' resulting in powdered calcium hydroxide, known as gray calcium powder.

It can also be produced through chemical synthesis, but the calcination method is more common.

Physical properties:

White powder: The appearance of gray calcium powder is white or slightly yellowish, odorless, and tasteless.

Hygroscopicity: It easily absorbs moisture from the air, especially in humid environments, leading to clumping.

Reactivity: It reacts with water exothermically to produce an alkaline solution and reacts with carbon dioxide to form calcium carbonate.

Chemical properties:

Alkalinity: Gray calcium is a strong alkaline substance with a pH value of about 12, capable of neutralizing acids.

Air-hardening: It reacts with carbon dioxide in the air, gradually hardening and transforming into calcium carbonate, which makes it an air-hardening cementing material.

Application industries

Thanks to its unique chemical properties and reactivity, gray calcium is widely used in:

Building materials: Used to prepare interior wall putty, water-resistant putty, inorganic coatings, gray sand bricks, etc., enhancing adhesion, water resistance, and hardness.

Chemical industry: Used as a neutralizing agent, desulfurization agent, wastewater treatment agent, etc., for neutralizing acidic gases, flue gas desulfurization, and wastewater pH adjustment.

Agriculture: Improves soil acidity and provides calcium fertilizer.

Environmental protection: Used in processes such as waste gas treatment, heavy metal ion precipitation, and sludge dewatering.

Pharmaceuticals and food: Used as a filter aid, acidity regulator, calcium source supplement, etc.

Application and function in brake pads

Although the application of gray calcium in brake pads is not as common as collagen fibers, it may serve as an auxiliary component or additive in certain specific formulations or types of brake pads. Its possible functions in brake pads include:

Enhancing adhesion: As a cementing material, gray calcium can improve the bonding strength between the components of the brake pad, enhancing the overall structural stability.

Adjusting friction performance: By interacting with other friction materials, gray calcium may help adjust the friction coefficient of the brake pad, making the braking effect more stable and controllable. Thermal stability and heat resistance: Although not a primary heat-resistant component, gray calcium may influence the distribution of heat and thermal stability in brake pads through chemical reactions, especially during prolonged or high-intensity braking. Cost reduction or substitution: In some cases, gray calcium may serve as an economical substitute for certain high-cost materials or be used to improve braking performance under specific conditions (such as low temperatures or slippery surfaces).

Factory

Our company is equipped with a 1 set of 5R Raymond Mill, 2 sets of 4R Raymond Mill, Longyan Yifeng Mill 998, Impact Mill for Acicular Wollastonite Powder, Wet Ball Mill for Zircon Media, Continuous Modifier, Classifying Sieve, and other state-of-the-art equipment.We offer a wide range of powders with varying contents and particle sizes [10-3000 mesh], ensuring the precise specifications of our clients' needs. Our products have been developed for various sassafras materials, including metal mineral powder, non-metallic mineral powder, and chemical fiber materials. We have produced nearly 100 different varieties and supplied them to hundreds of domestic and foreign auto parts enterprises.Our 5,000-square-meter facility allows us to provide customized, unique formulas, modified materials, and premixes.

Company Factory

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Equipment

The company is customer-oriented, joint China University of Geosciences (Wuhan), Wuhan University of Technology, Sun Yat-sen University, Hubei University of Science and Technology and other domestic institutions of higher learning, combined with the enterprises facing the problems in the production process, long-term tracking and communication, and effectively for the sake of the customer, make every effort to unite the relevant colleges and universities and technical experts in the same industry.We will strive to collaborate with relevant universities and technical experts in the same industry to solve problems in practice for our customers.

Experimental Equipment

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Inspection Report

Dolomite Powder

Cryolite

Glass Fibre

Magnetite

Electrolytic Iron Powder

Nitrile Rubber Powder

Molybdenum Disulfide

Calcite Powder

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Qualification

CERTIFICATE OF QUALITY MANAGEMENT SYSTEM CERTIFICATION

GB/T19001-2016/IS09001:2015

Supplier Basic Credit Certification

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SERVICE ADVANTAGES

Daye Jinpeng Friction Material Co., Ltd. was established in Daye City, evolving from the original Caojiawan wollastonite mine. The company has transitioned from a primary focus on wollastonite and copper mining to its current state of processing and selling metal and non-metallic ore powders, mineral fibers, and more.Upholding the company philosophy of "Accumulating Virtue, Preserving Integrity; Enjoying Dedication, Succeeding with Honesty," the company has established two brands, committed to creating the [Jin Peng] [SPAR] 2 brands, and is committed to focusing on providing exceptional service to our valued customers.

2013 Year

Company established in 2013

5000 m²

Plant area 5000 square meters

5 Group

Large production machinery and equipment

300 +

More than 300 cooperative customers

Fully equipped and rich in resources

The company has a wollastonite, a copper mine. Daye has polymetallic mines (gold, silver, copper, iron, tungsten, antimony, etc.) and non-metallic resources (wollastonite, calcite, feldspar, quartz, bentonite, kaolin, etc.)

Professional team, strict quality inspection

The company combines a number of domestic institutions of higher learning, as well as the same industry processing, modification, composite materials. Actively carry out technological innovation, product upgrades, continuously improve the quality of the company's products, develop modified materials, composite materials, strictly require all aspects of production, and complete the ISO9001 certification.

Advanced technology, leading technology

Own 5R Raymong Mill 1 set. 4R Raymung Mill 2 sets, Longyan Yifeng Mill 998. Needle-like wollastonite powder impact mill, zircon media wet ball mill, continuous modification machine, grading screen and other equipment. Different content for you.

One-to-one service, one-minute response

Respect customers, understand customers, continue to provide products and services that exceed customer expectations, be customers forever partners, satisfy customers and reduce costs. Improve quality, have quality, the pursuit of sustained, is our duty.