Compressor housing resistant to titanium fire, high-pressure compressor including such a housing and aircraft engine fitted with such a compressor

A housing comprising:

• at least one part including a structure holding rows of stator blades and an inner wall demarcating an outer contour of a compressor airstream in which are assembled rows of rotating rotor blades individually sandwiched between the rows of stator or variable pitch blades;
• and
• means for thermal protection against burning titanium that includes over at least one part of its length, as a load-bearing structure, a single-cast part made from titanium or titanium alloy and, as means of thermal protection, at least one element forming a shield made from refractory alloy(s) and incombustible in presence of burning titanium, wherein each shield is secured to the single-cast part by fasteners,
• wherein the fasteners are positioned with each shield so as to define together the inner wall demarcating the outer contour of the compressor airstream.